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Highway Link Design

highway link designThe design of the road alignment, a methodology that incorporates the basic principles to be used for co-ordinating the various elements of the road design, which together form the three dimensional design of the road.

Documents listed in this section cover Vertical Alignment, Horizontal Alignment, Obstructions to Visibility, Full Overtaking Sight Distance, Stopping Sight Distance, and Design Speed.

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Title Document type Published Publisher
Operation od Traffic Signals During Low Demands

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Traffic signal design is a science that has been developed through decades to a point where the maximum efficiency can be squeezed out of the most congested of junctions. Conflicting needs of all road users are measured, evaluated and optimised such that the ever-increasing and varying demands continue to be managed with ingenuity and perfection. But roads aren’t always busy. In many cases the very justification for signal control is based on a problem that may only exist for a couple of hours each weekday. Even the most congested networks have their quiet moment, yet, in a deserted city at 3 in the morning, signals still cycle for non-existent traffic. Any driver who ventures into this scenario may sit in frustration at a red light while the ‘intelligent’ control system optimises the signals for phantom conflicting demands. In other countries various techniques are applied to ‘demote’ signalised junctions to priority mode of operation, for example the flashing amber on main road/flashing red on minor road employed in some States of the USA, or signals that simply turn off overnight as in parts of Europe.

Research 04/10/12 Department for Transport Add icon
Manual for Streets 2: Wider Application of the Principles

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Streets and roads make up around three-quarters of all public space – their design, appearance, and the way they function have a huge impact on the quality of people’s lives. Manual for Streets 2 - Wider Application of the Principles is the result of collaborative working between the Department for Transport and the transportation industry. It is an excellent demonstration of what can be achieved when Government works in partnership with professional industry representatives. The aim of the document is to extend the advantages of good design to streets and roads outside residential areas and to provide an environment that improves the quality of life. By rethinking the way high streets and non-trunk roads are designed, the fabric of public spaces and the way people behave can be changed. It means embracing a new approach to design and breaking away from inflexible standards and traditional engineering solutions. The new guide does not supersede Manual for Streets; rather it explains how the principles of the first document can be applied more widely. The guide further integrates the fundamentals of “Link and Place”, allowing designers to set the right design strategy for the particular nuances of busier streets. It also outlines a process to deliver the Governments new de-cluttering agenda. The flexible and pragmatic guidance will assist all professionals involved in regeneration, development and highway management with a toolkit of approaches and methods that address the challenges on our busier streets.

Secondary Doc. 29/09/10 CIHT Add icon
TRL PPR 466 Safety evaluation of Compact MOVA Signal Control Strategy

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MOVA traffic signal control is used at approximately 3000 junctions in the UK. The recently released MOVA M5 has a facility to exclude the use of the more distance ‘IN’ detectors (normally around 8 seconds journey time from the stop line) on some or all of the approaches, thus saving ducting and maintenance cost. Commonly known as ‘Compact MOVA’, it can only be used on low speed approaches (where the 85th percentile speed is less than 35mph). The performance of Compact MOVA has been found to be better than traditional Vehicle Actuation control, matching standard MOVA in saturated conditions. Studies have also shown that Compact MOVA can significantly reduce pedestrian delay at stand-alone signal controlled pedestrian crossings with negligible effect on vehicular delay when compared with Vehicle Actuation. Previous risk assessments and a limited safety study indicate that Compact MOVA is as least as safe as Vehicle Actuation. The research in this project, commissioned by the Department for Transport, is necessary to confirm, or otherwise, these findings, and give confidence in the advice given to Local Traffic Authorities. This report describes the study carried out at three stand-alone Puffin crossings and two junctions. The investigation includes conflict analysis and an assessment of pedestrian and driver behaviour.

Research 13/05/10 Transport Research Laboratory Add icon
Designing Streets: A Policy Statement for Scotland

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Designing Streets is the first policy statement in Scotland for street design and marks a change in the emphasis of guidance on street design towards place-making and away from a system focused upon the dominance of motor vehicles. It has been created to support the Scottish Government’s place-making agenda and is intended to sit alongside the 2001 planning policy document Designing Places, which sets out government aspirations for design and the role of the planning system in delivering these.

Primary Doc. 02/03/10 Scottish Executive Add icon
Design Guide & Specification - Residential and Industrial Estates Development

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This document was identified as part of the UKRLG Project on Design & Maintenance Guidance. Hartlepool's design guide for developers, who will seek for the highways constructed to be adopted under section 38 or 278 of the Highways Act.

Secondary Doc. 01/02/10 UK Roads Liaison Group Add icon
Highway Asset Management Quick Start Guidance note – getting started

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Highway Asset Management Quick Start Guidance note – getting started sets out a practical means of getting started with asset management, and identifying the sensible steps that should be taken to progress this practice, and in what order should you address these.

General Information 01/10/09 UK Roads Liaison Group Add icon
Luton Borough Highways Standard 01/09 - Anti skid surfacing & coloured surface treatment

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This document was identified as part of the UKRLG Project on Design & Maintenance Guidance. Luton Borough Council's standard illustrates how to employ anti-skid and coloured surface treatment into schemes to the required specification. This ensures that the use of these materials is consistent throughout.

Secondary Doc. 31/01/09 UK Roads Liaison Group Add icon
Engineer's Design And Reference Tool

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The e-dart (Engineer's Design And Reference Tool) website has been developed to improve access to local authority road design guidelines and standards for development. Specifically aimed at Transport Planner's, the site provides access to design standard for local authorities throughout the UK, with a user friendly search facility to allow the identification of the appropriate information. The site also allows users to create outputs for future reference.

Useful Website 01/01/09 CIHT Add icon
Access markings policy

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This document was identified as part of the UKRLG Project on Design & Maintenance Guidance. Gloucestershire County Council's policy for the use of H markings.

Secondary Doc. 17/12/08 UK Roads Liaison Group Add icon
DMRB Volume 6 Road Geometry - Section 1 Links: TD 70/08 Design of Wide Single 2+1 Roads

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A Wide Single 2+1 (WS2+1) road consists of two lanes of travel in one direction and a single lane in the opposite direction. This provides overtaking opportunities in the two lane direction, while overtaking in the single lane direction is prohibited.

Primary Doc. 01/08/08 Highways Agency Add icon
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