Glossary
- AHAUC Anglian Highways and Utility Committee
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AO
Awarding Organisation
An awarding organisation (also known as an awarding body or exam board) is responsible for creating and managing qualifications that assess the knowledge, skills, and competencies of learners. These organisations play a crucial role in the education and training sector by ensuring that qualifications are credible, valid, and aligned with industry standards
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ARMs
Alternative Reinstatement Materials
ARMs are categorized into two generic groups: Structural Materials for Reinstatements (SMRs) and Flowable SMR's (FSMRs). SMRs include proprietary or alternative bound reinstatement materials with a cementitious, chemical, or hydraulic binder, or inherently self-cementing. FSRMs are flowable mixes that should not normally require compaction and are capable of achieving strengths equivalent to SMRs.
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ARTSM
Association For Road Traffic Safety and Management
ARTSM provides guidance notes and publications for use by manufacturers, service providers, and the user communities. These resources are designed to assist in the development of standards, requirements, and best practices within the highways and transport sector. The guidance notes cover a wide range of topics, ensuring that members have access to the latest information and tools to enhance their work.
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ASD
Additional Street Data
Additional information about the type and nature of a street to be found in a local street gazetteer (LSG), and the national street gazetteer (NSG).
Several different types of additional street data can be recorded against any street in the NSG; the different types are detailed in section 4.3. All ASD is submitted to the NSG concessionaire (Geoplace) for validation and inclusion in the published NSG.
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Authority
The term “authority” covers the following definitions of authority since they are usually the same organisation
highway authority
Street authority
Transport authority
Permit authority
Noticing authority (refers to an authority that used the notices provided for in NRSWA. Almost every authority now operates a permit scheme)
Bridge authority
Strategic highways company (refers to National Highways)
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BBA
British Board of Agrément
The British Board of Agrément (BBA) was established in 1966 and serves as a key authority in the construction industry, providing independent certification for construction products and systems. Its primary role is to ensure that these products meet the necessary standards for safety, quality, and performance, thereby helping to build confidence among manufacturers, designers, and installers.
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BH
Bar Hole
Bar holes are small diameter holes made in the ground along the route of a gas pipe in a bar test survey to determine the location of any leakage.
- CBGM Cement bound granular mixture – a mixture of controlled graded aggregate using cement that sets and hardens
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CBR
California bearing ratio UK
The California Bearing Ratio (CBR) test is a crucial assessment tool in the UK for evaluating the load-bearing capabilities of subgrade soils. It is used to determine the thickness of materials needed for road construction and to assess the strength and bearing capacity of soils and other materials used in road construction and civil engineering.
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CoP
Code of Practice
The efficient co-ordination of street and road works is one of the most important aspects of street works legislation, and this code gives practical guidance around both legislative requirements and associated good practice to help achieve this.
Click here to view the Code of practice for the co-ordination of street and road works: April 2023
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CSO
Combined Sewer Overflow
Combined Sewer Overflows (CSOs) are a significant issue in urban areas, particularly during heavy rainfall. They occur when a combined sewer system, which carries both stormwater and wastewater, becomes overwhelmed. This leads to the discharge of untreated sewage into the environment, posing risks to public health and the ecosystem.
Combined Sewer Overflows Explained – Creating a better place
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DFI
Department for Infrastructure
The Department for Infrastructure. Department for Infrastructure is part of the Northern Ireland Executive.
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DFT
Department for Transport
The Department for Transport (DfT) is a UK government department responsible for the English transport network and some transport matters in Scotland, Wales, and Northern Ireland.
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DMRB
Design Manual for Roads and Bridges
The Design Manual for Roads and Bridges (DMRB) is a comprehensive suite of documents that sets the standards for the design, assessment, and operation of motorways and all-purpose trunk roads in the UK.
Click here to view The Design Manual for Roads and Bridges (DMRB)
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DNO
Distribution network operator (electricity network)
A Distribution Network Operator (or DNO) is a company licensed to distribute electricity in the UK. These companies own and operate the system of cables and towers that bring electricity to our homes and businesses.
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DSIT
Department for Science, Innovation & Technology
The Department for Science, Innovation and Technology, is a ministerial department of the UK government. It was established on February 7, 2023, and focuses on maximizing the potential of science and technology to improve people's lives
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DSM
Deferred Set Mixtures
Deferred set coated mixtures can be used at any position in interim and immediate reinstatements, but are not permitted within permanent reinstatements.
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DTRO
Digital Traffic Regulation Orders
A digital traffic regulation order (D-TRO) is the digital version of a traditional traffic regulation order. It’s not a legal document, but rather a digital extract of the legal order. It contains machine-readable data in a standardised format that can be easily shared and integrated with other digital systems.
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EA
Environment Agency
The Environment Agency works to create better places for people and wildlife, and supports sustainable development.
- EMHAUC East Midlands Highways and Utility Committee
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ENA
Energy networks association
The Energy Networks Association (ENA) is the industry body representing the energy networks in the UK and Ireland, focusing on the safe, reliable, and sustainable delivery of gas and electricity.
Energy Networks Association (ENA) - The voice of the networks
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EToN
Electronic Transfer of Noticing
Electronic Transfer of Noticing (EToN) is a system used for the two-way transmission of notices between utility companies and highway authorities in England and Wales. It facilitates the sharing of information regarding road works and maintenance, ensuring that all relevant parties are informed about upcoming or ongoing works.
Street and road works: Street Manager and updates to permit schemes
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FCR
Foamed Concrete for Reinstatements
Foamed concrete for reinstatements is a versatile material used in various applications, including trench reinstatement and void filling. It is lightweight, free-flowing, and does not require compaction, making it ideal for restoring lateral support to adjacent services. The material is compliant with HAUC legislation and is suitable for use in highways, footways, footpaths, and cycle tracks.
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FPN
Fixed Penalty Notice
Fixed penalty notice. A notice offering a person the opportunity of discharging any liability to conviction for a fixed penalty offence by payment of a penalty
Schedule 4B to NRSWA and the 2007 FPN regulations. Section 37(6) of TMA 2004 and regulations 21 to 28 of the 2007 permit.
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GDPR
General Data Protection Regulation
To give control to individuals over their personal data and to simplify the regulatory environment for international business by unifying the regulation within the EU.
General Data Protection Regulation (EU) 2016/679.
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GIS
Geographical Information System
A computer system for capturing, storing, checking, integrating, manipulating, analysing and displaying data related to positions on the Earth’s surface.
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HA
Highways Authority
In England and Wales a Highway Authority is a statutory organisation empowered by the Highways Act 1980, as amended by various other acts (including the GLA Act), to carry out the function of owning and operating the highway network in those two countries. Highway Authorities outside the national government are the top-tier local authorities in their relevant areas, such as County Councils, Metropolitan Boroughs, or Unitary Authorities.
In Scotland any organisation empowered by the Scottish Government in accordance with the Roads (Scotland) Act 1984 as amended is known as the Roads Authority; whilst there is no real equivalent term in the Republic of Ireland where all local authorities have road management responsibilities.
In Northern Ireland, the equivalent of a Highway Authority is the Department for Infrastructure (DfI), specifically through its executive agency DfI Roads.
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HA 1980
The Highways Act 1980.
The Highways Act 1980 is an act of the Parliament of the United Kingdom that governs the management and operation of the road network in England and Wales. It consolidates several earlier pieces of legislation and outlines the responsibilities of highway authorities, including the legal framework for developing new roads and processes for stopping up or diverting highways. The Act is significant in the context of highway laws in the UK, as it establishes the ownership of highways maintainable at public expense.
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HAPAS
The Highway Authorities Product Approval Scheme
The Highway Authorities Product Approval Scheme (HAPAS) is a rigorous certification process developed by the British Board of Agrément (BBA) for materials used in highways maintenance and construction. HAPAS ensures that materials meet or exceed industry standards, providing quality assurance, performance, and safety. The scheme is essential for highway authorities, contractors, and project managers to use reliable, high-quality products that have met stringent performance criteria.
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HAUC(UK)
The Highway Authorities and Utilities Committee
The Highway Authorities and Utilities Committee (HAUC(UK)) is the representative body that works with the UK and devolved governments to help make improvements to the management of works and the street and road network.
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HBM
hydraulically bound material
Hydraulically bound materials (HBM) consist of aggregates combined with hydraulic binders such as cement, lime, or fly ash. When mixed with water, these materials undergo a chemical reaction known as hydraulic action, which allows them to harden and gain strength over time. This process makes HBM suitable for various construction applications, particularly in creating durable and stable road surfaces.
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HSG47
Health and Safety Guidance document
HSG47 is a Health and Safety Guidance document published by the Health and Safety Executive (HSE) in the UK. It provides essential guidance on avoiding danger from underground services, such as electricity cables, gas pipelines, and water mains. The document outlines safe working practices, including planning work, locating and identifying underground services, and excavating safely to minimize risks.
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JAG(UK)
The Joint Authorities Group (UK)
JAG(UK) represents the best interests of every Highway and Road Authority in the United Kingdom. It was formed to provide highways advice and support to the government through the Highway Authorities and Utilities Committee, HAUC(UK) and also through direct contact with government departments
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JUG
The National Joint Utilities Group (NJUG) has now become Street Works UK
Street Works UK is the utility arm of the Highway Authorities and Utilities Committee (HAUC(UK)), working collaboratively with roads / local authorities and national and regional governments to drive up standards of road and street works in Scotland, England, Northern Ireland and Wales.
- LHAUC London Highways and Utility Committee
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LLPG
Local Land and Property Gazetteer
The Local Land and Property Gazetteer (LLPG) is a central corporate database maintained by local authorities in the UK, responsible for all addressing used within an authority. It ensures that every property has a unique reference number (UPRN) and coordinates addresses across different services, improving efficiency and reducing errors. The LLPG is essential for services like emergency response and council services, as it provides a unified address resource for residents and businesses.
What is an LLPG? | Local Land & Property Gazetteer | GeoPlace LLP
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LSG
Local street gazetteer
A Local Street Gazetteer (LSG) is the central database for street information within a local highways authority. The LSG is also the dataset that underpins the ability of each local highway authority to meet their statutory obligations.
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MCHW
Manual of Contract Documents for Highway Works
The Manual of Contract Documents for Highway Works (MCHW) is a standard suite of specification documents used in highway construction and maintenance, with updates planned for 2025.
Manual of Contract Documents for Highway Works (MCHW) - National Highways
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NAG
National Address Gazetteer
The National Address Gazetteer is a comprehensive database that consolidates address information from local authorities and Ordnance Survey in the United Kingdom. Its purpose is to provide a definitive source of publicly-owned spatial address data for the public sector, ensuring accurate and reliable address information. This database serves as a crucial resource for various applications, including mapping and location services.
- NEHAUC North East Highways and Utility Committee
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NHSS
National Highway Sector Scheme
National Highway Sector Schemes (NHSS) are bespoke integrated quality management systems for organisations working on the UK road network.
- NIRAUC Northern Ireland Road Authority and Utility Committees
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NJUG
The National Joint Utilities Group (NJUG) has now become Street Works UK
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NOM
Network Occupancy Management
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NRSWA
The New Roads and Street Works Act 1991
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NSG
National Street Gazetteer
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NUAR
National Underground Asset Register
The National Underground Asset Register (NUAR) is an initiative by the Geospatial Commission aimed at creating an interactive digital map of underground pipes and cables. This register will revolutionize the management of buried infrastructure by improving data sharing and access across England, Wales, and Northern Ireland. It aggregates underground assets into a centralized database, addressing challenges related to data sharing and enhancing the efficiency of installation, maintenance, and operation of these assets.
- NWHAUC North West Highways and Utility Committee
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PAA
Provisional Advance Authorisation
A preliminary permit that allows for the early planning of significant road works, ensuring that activities are provisionally approved before final details are confirmed.
Applications for a PAA must be submitted at least three months before the proposed start date of the works. This advance notice is crucial for effective planning and coordination with the relevant authorities
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PBI
Performance based inspections
Performance-based inspections (PBIs) are a regulatory approach that adjusts the frequency and intensity of inspections based on the performance metrics of utility companies and contractors, aiming to improve compliance and reduce disruptions.
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PCSMs
Permanent Cold-lay Materials
Permanent cold-lay materials are essential for road repairs and maintenance. They are designed to be durable, instantly trafficable, and reduce the total cost of ownership.
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PEN
The penetration grade of a bituminous binder
The penetration grade of a bituminous binder is a measure of its hardness or softness, determined by the depth to which a standard needle penetrates the bitumen sample under controlled conditions of temperature and load. This measurement is crucial for selecting the appropriate bituminous binder for various applications, ensuring durability and flexibility in different climatic conditions. The penetration grade is typically expressed in tenths of a millimeter and is used in conjunction with other properties to assess the binder's performance under various temperatures and loads
Use of Penetration Grade Bitumen: Grades, Uses & Benefits - Pars Universal Bitumen
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PMMA
Polymer modified mastic asphalt to BS EN 13108-6
Polymer modified mastic asphalt (PMMA) is a highly durable construction material that combines traditional mastic asphalt with polymers to enhance flexibility, longevity, and resistance to environmental factors.
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Promoter
The term “promoter” means the organisation promoting the works and includes
Undertaker
Utility company
Highway authority
Other organisations such as, for example, London Underground and Network Rail
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PROW
Public Right of Way
Public rights of way are marked with signs or coloured arrows, for example yellow for footpaths, blue for bridleways
Rights of way and accessing land: Use public rights of way - GOV.UK
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PSV
Polished Stone Value
The Polished Stone Value (PSV) is a crucial measure of the skid resistance of road surfaces, indicating how well aggregates resist polishing under traffic. A higher PSV signifies better skid resistance, which is essential for road safety and helps prevent accidents due to slippery conditions. The PSV is determined through standardized testing methods and is widely adopted in road design and construction to ensure safe driving surfaces.
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RAUC
The Roads Authorities and Utilities Committee
The Roads Authorities and Utilities Committee (RAUC) is a key body in the UK road works community, responsible for advising and supporting the government through the Highway Authorities and Utilities Committee (HAUC (UK)). RAUC (S) provides support and advice to the Commissioner to improve the planning, coordination, and quality of road works in Scotland. The committee consists of roads authorities and undertakers and works closely with RAUC (S) to enhance road works in Scotland.
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RPS 298
Regulatory Position Statement
Environmental permits: regulatory position statements. When the Environment Agency will not require you to get a permit to carry out certain activities that they regulate.
Environmental permits: regulatory position statements - GOV.UK
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RTNZ
Road to Net Zero
The Road to Net Zero project – a roadmap for change that’s jointly sponsored by Transport for London (TfL) and the Highway Authority and Utilities Committee UK (HAUC(UK)).
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RTRA 1984
Road Traffic Regulation Act 1984
The Road Traffic Regulation Act 1984 is a significant piece of legislation in the United Kingdom that aims to consolidate previous laws governing road traffic regulation. It provides the framework for regulating or restricting traffic on roads in Great Britain, primarily in the interest of safety, including the establishment of speed limits, traffic signs, and signals. The Act also includes various provisions and amendments that can be accessed in full text on official legal websites.
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S/MGR
Street Manager
apply for street and road work permits
assess permits
record inspections
add reinstatements (after work has been completed)
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S278
Section 278 agreement - The Highways Act 1980
A section 278 agreement are legal contracts between developers and local highway authorities under the Highways Act 1980. They allow developers to make permanent alterations or improvements to public highways as part of a planning approval. Examples of work covered by an S278 agreement include:
- New or changed access to a development site.
- Improvements to junctions, including roundabouts and traffic lights.
- Enhancements for pedestrians and cyclists.
- Traffic calming measures and signalized crossings. These agreements ensure that new developments integrate with existing infrastructure while maintaining safety and functionality standards.
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S50
Section 50 of the New Roads and Street Works Act (NRSWA) 1991
NRSWA S50 refers to Section 50 of the New Roads and Street Works Act 1991, which grants permission for certain activities related to the installation, maintenance, and alteration of apparatus on public highways.
- It is primarily used by organizations that do not have statutory rights to install apparatus in the highway. 1
- Organizations applying for a S50 license must provide details of the works, proof of insurance, and pay a fee. 1
- The license allows the holder to inspect, maintain, adjust, repair, and remove apparatus, but does not exempt them from obtaining other necessary permissions. 2
- Compliance with statutory duties and conditions is mandatory, and non-compliance can result in penalties.
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S58
Section 58 of the New Roads and Street Works Act (NRSWA) 1991
Allows authorities to restrict certain works following substantial road works. This section enables the street authority to publish a notice that prohibits the execution of street works during a specified period after the completion of substantial road works. The restriction period can vary from one to five years, depending on the type of work carried out. During this period, works can only be carried out with the authority's permission, and utility companies are notified to avoid disrupting newly laid roads and footways.
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S74
Section 74 of the New Roads and Street Works Act (NRSWA) 1991
Pertains to penalties for utility companies and contractors who carry out street works that exceed their agreed duration without good reason.
It allows highway authorities to impose financial penalties on these parties if their work takes too long, aiming to reduce delays and ensure roads are reopened as soon as possible.
Staining-and-spoil-Section-74-guidance-HAUC-England-interim-advice-version.pdf
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S81
Section 81 of the New Roads and Street Works Act 1991
Places a duty on statutory undertakers (like utility companies) to maintain their underground and street-level apparatus to the reasonable satisfaction of the street authority. This includes keeping the apparatus in efficient working order and ensuring the safety and convenience of the public. If an undertaker fails to meet this duty, the street authority can carry out emergency works and charge the undertaker for the costs.
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SCRIM
Sideway-force Coefficient Routine Investigation Machine
The Skid Resistance Value is a measure of the road surface's contribution to the frictional forces developed between a vehicle's tyres and the road when accelerating, braking, or cornering. It is generally measured after the road has been wetted and data can be collected in various ways.
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SED
Special Engineering Difficulty
Special engineering difficulty refers to situations where the execution of street or road works presents significant challenges due to the presence of structures or utilities that require careful handling to avoid damage or disruption. These difficulties can include the need for special techniques, equipment, or coordination with other parties involved in the work. The designation of a street as having special engineering difficulties is subject to a formal consultation process to ensure that all parties are adequately informed and prepared for the work
- SEHAUC South East Highways and Utility Committee
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SLG
NRSWA Street Works Signing, Lighting, and Guarding Training Guide
SLG NRSWA refers to the Signing, Lighting, and Guarding training under the New Roads and Street Works Act 1991. This training is essential for ensuring road safety during construction and maintenance activities. It covers the installation of temporary traffic management measures, including signs, cones, barriers, and lights, to minimize disruption and protect workers and the public. The training is mandatory for operatives and supervisors involved in street works, ensuring compliance with safety regulations and reducing risks associated with poorly managed roadworks.
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SMP
Sewerage Management Plan
A Sewerage Management Plan (SMAP) is a long-term plan that outlines how a sewerage undertaker will manage its sewerage and wastewater services over the next 25 years. It is essential for ensuring that the sewerage network can handle the increasing demands of the population and the environmental challenges
Guidelines for Statutory Drainage and Wastewater Management Plans (DWMPs) - GOV.UK
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SROH
Specification of the reinstatement of openings in highways (4th Edition - 2019)
SROH stands for Specification of the Reinstatement of Openings in Highways. It outlines the standards for reinstating streets after completing street works, and anyone who carries out street works must follow these standards.
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SROR
Specification for the Reinstatement of Openings in Roads
The Specification for the Reinstatement of Openings in Roads is a set of guidelines that outlines the standards for reinstating streets after completing street works. It is essential for anyone who carries out street works to reinstate the street once the work is finished, in line with these standards.
Specification for the Reinstatement of Openings in Roads | Scottish Road Works Commissioner
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SRV
The Skid Resistance Value
The Skid Resistance Value is a measure of the road surface's contribution to the frictional forces developed between a vehicle's tyres and the road when accelerating, braking, or cornering. It is generally measured after the road has been wetted and data can be collected in various ways.
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SRWC
Scottish Road works Commissioner
The Scottish Road Works Commissioner oversees improvements to the planning, co-ordination and quality of road works in Scotland.
The office promotes and encourages good practice across utility companies and roads authorities and monitors performance.
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SU
Statutory undertaker
A legal term used to describe those organisations that have certain legal rights and obligations when carrying out particular development and infrastructure work. Typically they are utilities, communications companies and Network Rail: those who deal with water, gas, electricity, communications and railways etc. The statutory right is enabled in primary legislation such as the Electricity Act, the Water Act, the Gas Act, the Communications Act
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SUDS
Sustainable Drainage Systems
Sustainable Drainage Systems (SuDS) are innovative water management practices designed to mimic natural drainage processes, reduce flooding, improve water quality, and enhance urban environments.
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SWA
Street Works Act
The Street Works Act, particularly the New Roads and Street Works Act 1991 in the UK, regulates the construction, maintenance, and management of public roads and footways, ensuring safety and minimizing disruption.
- SWHAUC South West Highways and Utility Committee
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SWO
Street Works (NI) Order 1995
This Order makes new provision to facilitate the co-ordination and control of street works in Northern Ireland.
Link to SWO (NI) -
SWQO
Statutory Water Quality Objective
The statutory water quality objective is to ensure that water bodies are protected, enhanced, and restored to 'good' status, as per the Water Environment Regulations 2017.
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SWQR
Street Works Qualifications Register
The Street Works Qualifications Register (SWQR) is a UK system that maintains records of individuals who have achieved the necessary qualifications to perform street works under the New Roads and Street Works Act (NRSWA).
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SWUK
Streetworks UK
Street Works UK Ltd is the UK’s only cross-sector trade association representing gas, electricity, water, sewage and telecommunications utility companies, their contractor partners and a range of affiliate companies that provide goods, materials, equipment and services that support Street Works UK’s Vision for Street Works.
Street Works UK is the utility arm of the Highway Authorities and Utilities Committee (HAUC(UK)), working collaboratively with roads / local authorities and national and regional governments to drive up standards of road and street works in Scotland, England, Northern Ireland and Wales.
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TFL
Transport for London
Transport for London (TfL) is a local government body responsible for most of the transport network in London, United Kingdom.
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The Red Book
The Red Book, also known as the Safety at Street Works and Road Works A Code of Practice
A key reference document for utility companies and highway authorities in the UK. It outlines the statutory requirements for signing, lighting, and guarding at street works and road works, ensuring safety for both operatives and the public. The Red Book is essential for compliance with the New Roads and Street Works Act 1991, which governs the planning and execution of road and street works. It includes guidelines on risk assessment, equipment standards, and traffic control measures to protect road users and maintain public safety.
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TM
Traffic Management
Traffic control that involves directing vehicular and pedestrian traffic around a construction zone, accident or other road disruption. This can be in the form of Give and Take, Priority Working, Stop and Go Boards, Temporary Traffic Signals, Stop Works Sign.
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TMA
Traffic Management Act 2004
The Traffic Management Act 2004 is a significant piece of legislation in the United Kingdom that provides a framework for the management of road networks. It was enacted to address issues related to traffic congestion and to ensure the efficient movement of traffic, including both vehicles and pedestrians. The Act places specific duties on local authorities to manage their road networks effectively and to minimize disruption caused by roadworks and other activities.
Traffic Management Act 2004 overview and parking controls - GOV.UK
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TOR
Terms of Reference
Terms of Reference (ToR) is a formal document that outlines the purpose, scope, objectives, and structure of a project or initiative, serving as a blueprint for stakeholders
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TPO
Tree Preservation Order
A Tree Preservation Order is an order made by a local planning authority in England to protect specific trees, groups of trees or woodlands in the interests of amenity
Tree Preservation Orders and trees in conservation areas - GOV.UK
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TPP
Transport Policies and Programme
The UK is undergoing significant changes in its transport policies and programmes, focusing on sustainability, connectivity, and efficiency. Key initiatives include:
- Integrated National Transport Strategy: Aims to create a cohesive transport system across England, ensuring safety, reliability, and accessibility for all users.
- UK Transport Vision 2050: Focuses on decarbonizing transport, enhancing resilience, and leveraging digital technologies to create a net-zero transport system.
- National Transport Strategy for England: Proposes a national vision for transport systems, empowering local leaders to deliver integrated local transport.
- Major Transport Changes in 2025: Includes railway nationalization, zero-emission bus initiatives, and policy reforms like the Integrated National Transport Strategy.
- Future of Transport Programme: Aims to shape transport innovation and make the UK a world leader in transport movement.
These initiatives reflect the UK's commitment to transforming the transport sector to meet the challenges and opportunities of the future.
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TRACS
Traffic Speed Condition Survey
A label to describe a methodology for machine-based surveys of surface condition, including cracking and rutting, of the trunk road network in England. The TRACS specification covers the requirements for both the machinery used and the survey process.
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TRO
Traffic Regulations Order
Traffic Regulation Orders (TROs) are legal instruments used by local authorities to manage traffic flow, implement parking restrictions, and enhance road safety.
The Local Authorities’ Traffic Orders (Procedure) (England and Wales) Regulations 1996
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TTRN
Temporary traffic regulation notice
Where urgent action is needed, the traffic authority may issue a temporary traffic regulation notice (TTRN) imposing a short-term closure or restriction. Prior notice is not necessary. There are two types of TTRN
- if there is a danger to the public or risk of serious damage to the road, independent of street works. For example, a leaking gas or water main, a TTRN can be made with a duration of up to 21 days and can only be extended by one further notice, that is, a further 21 days
- if there is no risk of danger or damage, a TTRN is restricted to 5 days duration and cannot be extended
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TTRO
Temporary Traffic Regulation Order
In non-urgent cases, the traffic authority may make a temporary traffic regulation order (TTRO), which may remain in force for up to 18 months. A TTRO is limited to six months for footpaths, bridleways, cycle tracks and byways that are open to all traffic.
A TTRO may provide that restrictions have effect only when traffic signs are lawfully in place. This will help limit traffic disruption where activities progress along a length of road. An application for a road closure should only be made after careful consideration of all other alternatives. The authority has a statutory duty under the TMA to secure the expeditious movement of traffic on its road network.
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TTS
TRACS type surveys
Now known as SCANNER surveys.
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UKOPA
United Kingdom Onshore Pipeline Operators Association
UKOPA (United Kingdom Onshore Pipeline Operators' Association) is the leading authority on the UK's onshore pipeline network. They represent operators dedicated to safely transporting hazardous fluids and continually improving safety and environmental standards. Since 1996, UKOPA has fostered collaboration among operators, regulators, and key stakeholders and encompasses more than 95% of the UK’s pipeline operators.
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UKPMS
United Kingdom Pavement Management System
United Kingdom Pavement Management System – this is a standard logical design for software used by local highway authorities for the management of the maintenance of their road networks. The development of UKPMS was funded by DfT. A number of companies market software that meets the UKPMS requirements. Associated with UKPMS are road condition monitoring surveys (including SCANNER, CVI and DVI, see above) and standard ‘rules and parameters’ to be used when processing survey data for ‘national’ purposes for example, for reporting against single data list items 130-01 and 130-02.
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UPRN
Unique Property Reference Number
The Unique Property Reference Number is a unique number for every addressable location—e.g., a building, a bus stop, a post box, a feature in the landscape, or a defibrillator—in Great Britain.
Unique Property Reference Number | Power of UPRN | GeoPlace LLP
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USAG
Utility Strike Avoidance Group
The Utility Strike Avoidance Group (USAG) is a collaborative initiative aimed at minimizing utility strikes during construction and excavation work, involving over 400 utility asset owners, industry groups, and contractors.
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USRN
Unique Street Reference Number
The Unique Street Reference Number (USRN) is an 8 digit unique identifier for every street across Great Britain.
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WIC
The Water Industry Commission for Scotland. (The economic regulator for Scottish Water)
The Water Industry Commission for Scotland (WICS) is the economic regulator of the water and sewerage industry in Scotland. Established in 2005, WICS is an executive non-departmental public body of the Scottish Government with statutory responsibilities.
- WMHAUC West Midlands Highways and Utility Committee
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Works Promoter
A Works Promoter is any organisation carrying out works in the highway
Regardless of whether they are working directly for, or on behalf of, a highway authority or an undertaker
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WRP
Works for road purposes
NRSWA defines “works for road purposes” (WRP) as any of the following descriptions executed in relation to a highway
• Works for the maintenance of the highway,
• Any works under powers conferred by Part V of the HA1980 (Highway improvement works).
• Erection, maintenance, alteration or removal of traffic signs on or near the highway.
• Construction of a crossing for vehicles across a footway or grass verge or the strengthening or adaptation of a footway for use as a crossing for vehicles.
- YHAUC Yorkshire Highways and Utilities Committee
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