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Title Document type Published Publisher
Vehicle Activated Sign Guidance

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This document was identified as part of the UKRLG Project on Design & Maintenance Guidance. Gloucestershire County Council's guidance on when VAS should be provided.

Secondary Doc. 01/06/08 UK Roads Liaison Group Add icon
Motorway Control in Norhern Ireland

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The Northern Ireland Roads Service Motorway Control Leaflet details use of Traffic Control Signals, Electronic Message signs, Traffic & Travel Information, Motorway Control systems, and the operation of the Traffic Information and Control Centre.

General Information 01/01/08 Roads Service Northern Ireland Add icon
Urban Traffic Management and Control Useful Website 01/01/08 CIHT Add icon
Guidance on Transport Assessment

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This document, Guidance on Transport Assessment (GTA), is intended to assist stakeholders in determining whether an assessment may be required and, if so, what the level and scope of that assessment should be. It provides guidance on the content and preparation of TAs and TSs. However, it is not a statement of Government policy and therefore should be read in conjunction with, and in the context of, relevant Government policies, in particular those relating to transport and planning. It is also important to note that the decision to grant planning permission for a development proposal is based on several considerations. A TA focuses primarily on the transport implications of the development, and therefore the completion of a TA does not guarantee the granting of planning consent. This guidance applies to England only, and not Scotland, Wales or Northern Ireland. Developers should also have regard to any more specific current guidance issued by local authorities. In particular, developers operating in the vicinity of London should note the guidance issued by Transport for London (TfL). Planning applications meeting the criteria for referral to the Mayor should follow TfL’s Transport Assessment best practice guidance (May 2006) at

Secondary Doc. 01/03/07 Department for Transport Add icon
Know Your Traffic Signs

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Why know your traffic signs? Traffic signs play a vital role in directing, informing and controllingroad users' behaviour in an effort to make the roads as safe aspossible for everyone. This makes a knowledge of traffic signsessential. Not just for new drivers or riders needing to pass theirtheory test, but for all road users, including experiencedprofessional drivers. Keeping up to date We live in times of change. Society, technology and the economy allplay their part in changing the way we travel. New road signsconveying new messages and in new formats are introduced fromtime to time, so drivers or riders who passed their driving test a fewyears ago need to keep up to date or run the risk of failing tounderstand or comply with recently introduced signs. A few examples of events that called for new signs include: • Britain's first motorway • Pelican crossings • Reintroduction of trams • Advanced stop lines • Vehicle-activated signs • Active Traffic Management. Responsibility for traffic signsResponsibility for the road network in the UK is split among:• the Highways Agency in England• the Welsh Assembly Government in Wales• the Scottish Executive in Scotland• and local or regional highway authorities. The central administrations above are responsible for the UK’sstrategic road network. Strategic roads are the highways that linkcities, areas of population, ports and airports. Most motorways andsome “A” roads are strategic roads. Local or regional highway authorities are responsible for localroads, and this includes a few motorways, all other “A” roads andall other public roads. While responsibility for placing, erecting andmaintaining traffic signs is split among these bodies, it is importantthat signs are consistent both in appearance and in the way theyare used.To ensure that the UK has a uniform traffic signing system, signsmust conform to the designs prescribed in the Traffic SignsRegulations and General Directions (although some signs mayhave been specially authorised by the Secretary of State). The Traffic Signs Manual, published by TSO, provides detailedguidance for those responsible for designing and installing traffic signs.

Secondary Doc. 01/01/07 Department for Transport Add icon
TAL 03/06 High Occupancy Vehicle Lanes

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High Occupancy Vehicle (HOV) lanes are a method of utilising spare capacity in existing bus lanes. They can also be used where the introduction of new bus lanes cannot be justified on bus frequency grounds, or as part of a policy to encourage car sharing. The basic principle is that only vehicles carrying two or more people, buses and two wheeled vehicles are permitted to use the lanes during the hours of operation. Heavy Goods Vehicles (HGVs) may, or may not be allowed access. Only three non-motorway schemes of this type are currently in operation in the UK, in Leeds, South Gloucestershire (on the northern outskirts of Bristol) and North Somerset (A370 Long Ashton Bypass). A number of other highway authorities are giving active consideration to introducing schemes of this type. This Traffic Advisory Leaflet reviews the pioneering schemes in Leeds and South Gloucestershire and provides guidance for anyone considering the conversion of existing bus lanes into HOV lanes, or the introduction of HOV lanes on non-motorway roads where there are currently no bus priority facilities. Like conventional bus lanes, HOV lanes can be located at the nearside or offside of the carriageway, or as contra flow lanes in otherwise one-way traffic schemes. It is recommended that scheme designers should consult the Department for Transport before proceeding with design work on the latter two alternatives because of possible signing and enforcement problems. Although this leaflet describes HOV lanes implemented for vehicles carrying two or more occupants, authorities might like to consider a minimum occupancy of 3 people. In either case, it is important to consider the likely changes in travel behaviour that HOV lanes might initiate. For example, HOV lanes to encourage car sharing might be in conflict with local policies to reduce car use and promote public transport, or walking and cycling to schools.

Primary Doc. 01/12/06 Department for Transport Add icon
TAL ITS 01/06 Understanding the Benefits and Costs of Intelligent Transport Systems

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The Department for Transport has launched a new website: The site hosts the Department's guidance: “Understanding the benefits and costs of Intelligent Transport: A toolkit approach”. This website will help authorities assess the business case for investment in ITS and identify how best to use ITS to meet their own, local challenges, and further supports Local Transport Plan (LTP) guidance.

Primary Doc. 01/10/06 Department for Transport Add icon
MCH 1542C - Specification for the Installation of Detector Loops on Motorways and All-Purpose Trunk Roads

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This specification relates to the installation of inductive vehicle detector loops on the Highways Agency’s road network. It may also be used by other highway authorities for roads under their control.

Primary Doc. 01/09/06 Highways Agency Add icon
TRL PPR 041 Cooperative road traffic signalling - potential costs, benefits and data exchange requirements

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As part of the DfT Horizons project a study has been undertaken of the potential benefits of cooperation between intelligent vehicles and traffic signal control using vehicle – infrastructure communications. Potentially much information on the behaviour of vehicles and the condition of the highway, from in-vehicle sensors, could be passed to the traffic signal control logic. The objective was to consider the potential benefits to the infrastructure to inform DfT policy before in-vehicle developments define what information may be available. Costs of strategies have been estimated, but are highly dependent on whether or not they can be hosted on platforms that will be implemented primarily for other purposes. Uses of probe vehicle information appear promising, particularly when the probe data can replace the need for infrastructure based sensors. Large safety benefits are estimated for automatic enforcement of behaviour at traffic signals, or for interacting with the vehicle controls to force obedience to the signals, but there would be considerable problems of political acceptability of such systems. It is recommended that the requirements for cooperative traffic signal control are embedded into related developments of in-vehicle telematics platforms, floating-car data gathering systems etc, rather than invest in a dedicated capability. In this way it should be possible to phase-in enhancements as the penetration of suitably equipped vehicles reaches levels at which correct operation of these advanced control systems is possible.

Secondary Doc. 21/08/06 Transport Research Laboratory Add icon
TRL PPR 087 Pedestrian and vehicular detectors for traffic management and control

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This paper summarises the findings on current capabilities of detectors for traffic control from a research project for DfT. It then identifies where efforts to improve detectors should be concentrated. The detector technologies and purposes considered are: Infra-red pedestrian detectors for kerbside detection, both passive arrays and active technologies, microwave pedestrian detectors for on-crossing detection, image processing pedestrian detectors for kerbside detection, sub-surface pedestrian detection for kerbside detection, spread spectrum radar pedestrian detectors for both on-crossing and kerbside detection, microwave vehicle detectors for use with SCOOT and active infra-red detectors for use with SCOOT.

Research 12/07/06 Transport Research Laboratory Add icon
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