Scottish Road Research Board

The Scottish Road Research Board (SRRB) is a partnership between Transport Scotland, the Society of Chief Officers for Transportation in Scotland (SCOTS) and the Scottish Road Works Commissioner (SRWC).

We annually commission research and development work to deliver improvements in safety, construction, operation and maintenance of the Scottish road network.

Our Objectives

Our objectives are to promote and deliver innovation; share new products, techniques and knowledge across Scotland’s road sector. We aim to:

• coordinate research activity within the roads community to provide a targeted, prioritised, focussed framework to the development of new processes, procedures, proprietary products and materials across all sectors, properly undertaken and communicated to all
• establish better formal links with academia
• identify new appropriate potential sources of research funding
• establish links with other bodies undertaking road related research, coordinate activity and communicate results and research activity to the wider roads community.

Our Priorities

Our delivery priorities include:

• improved connections across Scotland and internationally
• better journey times, better reliability, quality and accessibility
• low carbon technology & infrastructure, reduced emissions
• increased safety, more innovation
• continuously improving performance and organisation

How we Work

The SRRB comprises a Board of senior roads professionals from Transport Scotland, SCOTS and the SRWC with research conducted on our behalf by specialist research contractors and / or consultants. 

We meet on a quarterly basis to co-ordinate and prioritise ongoing research and to consider new bids for funding.

Our research programme is co-ordinated and managed by a Programme Manager who performs a Secretariat role in providing overall coordination and reporting to the SRRB.

Eligibility & Selection

Projects must be roads related and fall within the context of defined research themes, and realise real benefits in terms of safety, operation and functionality of trunk and local roads.

We assess each project proposal, and those aligning with our delivery priorities are incorporated into our research programme.

How We Are Funded

The research programme is jointly funded by Transport Scotland and SCOTS.  Our research budget is around £400,000 per annum.

How We Report

All project reports and other relevant information are disseminated to the roads community in the form of technical reports, advice notes and guidance documents. In most cases, reports are uploaded to this website on a regular basis.

We also recommend projects for presentation at national events such as Road Expo.

For more information on the SRRB research projects, please contact our mailbox at SRRB@transportscotland.gsi.gov.uk

The Board recently met to prioritise and agree the projects going forward to the 2017-18 research programme. The list of new projects includes:

• An Assessment of the Geometric Layout of Type A Lay-bys
• Innovative Monitoring Strategies for Managing Hazardous Slopes
• Accompanied and Virtual Road User Surveys
• Analysis of Griptester Data
• Electronic Data Monitoring of Resurfacing Works
• Developing a Road Condition Indicator for Fretting
• Friction After Polishing (FAP) for Skid Performance Specification and Classification 
• Speed Management Techniques for Principal Roads in Urban Settings
• Review of Pedestrian Crossing Guidance LTN 1/95
• Sitezone Proximity Warning System
• LED Lights on PPE
• Early Life SCRIM Performance
• SCRIM Investigatory Levels 

See the research programme for further details.

The themes of the SRRB research programme are aligned with the Scottish Government’s purpose and seek to encourage research projects that support the activities of both trunk and local road authorities in terms of:

• Geotechnical & Drainage Engineering – such as consideration of geotechnical and drainage parameters affecting strength and durability of transport infrastructure assets
• Design Standards, Specifications & Materials – such as consideration of road construction materials and construction methods and techniques on the strength and durability of carriageways, bridges, retaining walls and other transport infrastructure structural assets
• Road and Transport Safety & Security – such as consideration of the effectiveness of road safety strategies and initiatives including research that informs the development, technical performance and effectiveness of road safety system, strategies and initiatives
• Bridges and Structures – such as consideration of materials, proprietary systems, design and construction techniques and technologies in relation to the strength and durability of bridges, culverts, footbridges, underpasses, retaining walls, high mast lights and other transport infrastructure structural assets
• Maintenance & Operation of Roads and Other Transport Infrastructure Assets – such as consideration of practices, materials, proprietary systems, techniques and technologies that may be used to maintain the serviceability of the transport infrastructure during winter or other adverse weather conditions or events
• Traffic & Transportation – such as traffic modelling and consideration of the service levels, capacity, economic performance and cost effectiveness, and growth for roads and other transport modes
• Environment & Sustainability – such as consideration of the environmental and sustainability impact and effectiveness of transport infrastructure related practices and schemes and consideration of practices, materials, proprietary systems, techniques and technologies that may be used to improve the environmental and sustainability performance of the transport network
• Road Works – such as consideration of improvements in working practices, materials and planning, co-ordination and quality of road works throughout Scotland, along with better monitoring and compliance with legislation

Eligibility & Selection

To be eligible for funding, projects must be roads related and fall within the context of the research themes outlined above.

Projects should realise real benefits in terms of safety, operation and functionality of trunk and local roads in delivering the Scottish Government’s Purpose.

In addition, projects should:

• be of priority to the Scottish roads community
• investigate Scottish circumstances where these are likely to differ from the rest of the UK
• demonstrate a sound business case.

Projects are assessed by the Programme Board, and those aligning with our delivery priorities are incorporated into the research programme.

Fish Barriers on Scottish Major Roads

Study to understand the impacts on fish migration created by structures or major works owned or maintained by public bodies operating road networks.  The study would review the impacts associated with 27 identified structures and develop guidance for future.

Completion expected: summer 2019

Road Surface Noise Reduction Techniques

Research study to produce technical guidance (IAN) associated with low noise surface materials as noted in HD 36/06 and based on specification detail in the (unpublished forthcoming) 900 Series of the Specification for Highway Work.

Completion expected: summer 2019

Roadside Advertising – Driver Behaviour

Follow on from 2015 SRRB research, “Review of Roadside Advertising” to carry out more detailed assessment of the process of driver interaction with various signing characteristics (position, height, text size etc.) in supporting a more detailed understanding of how drivers engage with advertising and how various metrics might affect this.

Completion expected: summer 2018

Road Surface Water Flooding

A scoping study to assess the potential for developing a surface water flooding prediction tool for use by road authorities to inform future improved flood prediction and hazard modelling.

Completion expected: summer 2019

Developing a Road Condition Indicator for Fretting

Study to review any existing indicators of fretting using texture depth measures from SCANNER data (if available) and undertake comparisons of survey data and known fretting locations to assess if existing indicators are appropriate and/or suggest alternatives.

Completion expected: summer 2019

Evaluation of Friction After Polishing Test

This research will develop and test a methodology for using a new European Standard test method called Friction After Polishing (FAP) to classify the level of skid resistance that will be achieved with specific road surfacing materials. This will allow a much more effective and efficient approach to road surface skid resistance specification.

Completion expected: autumn 2019

Early Life SCRIM Performance

Recent examination of data from the trunk road pavement management system suggests that skid resistance values for a proportion re-surface roads fall below Investigatory Level after only a few years of service.  This study aims to examine the data in more detail to establish any patterns/trends and explore possible causes.

Completion expected: spring 2019

SCRIM Investigatory Levels

Study to review the appropriateness of the current SCRIM Site Categories and their associated Investigatory Levels, to explore their suitability for the Scottish road network, particularly on more lightly trafficked roads.

Completion expected: spring 2019

Video Based Road Defect Surveys

Trial aiming to assess if the outputs of video surveys could improve quality and reduce costs of road surveys of Scottish road network.  The project will report on the accuracy of the video survey in identifying defects and possible maintenance schemes, the costs associated with video surveys compared to traditional methods and a qualitative assessment of the safety and deliverability of each approach.

Completion expected: autumn 2019

Pavement Design Using EME2

Continuation of SRRB research aiming to look at the performance of EME2 as achieved in Scotland, in comparison with traditional materials, examining how HD26 road designs should be adjusted to accommodate the findings of previous research.  The study will consider formulating a new series of design charts that consider both fatigue and stiffness.

Completion expected: spring 2020

Winter Maintenance: Liquid Treatments

Final stage of research into use of brine-only winter treatments, the study will involve a trial to investigate the use of brine only for severe temperatures and snow treatments alongside various ‘blended’ liquids that are effective at preventing ice on carriageways and offer a viable alternative to pre-wetted salt during winter periods when precipitation is not forecast.

Completion expected: autumn 2019

Attitudes to Road Works

Study to interview a sample of road users to determine their preferences and tolerances of different traffic management strategies at roadworks in Scotland. Interviews would be conducted across the country and with a range of different road users. This will provide initial data to allow future work in understanding preferences of customers.

Completion expected: autumn 2019

Value of the Local Road Network to Society

Study to fill a current gap in the understanding of the value of the local road network to society and to the economic wellbeing of Scotland, and enable local authorities to make the case for ongoing investment.  The research will also highlight the extent to which maintenance and improvement of the local road network impacts on congestion levels and their impact on our environment.

Completion expected: spring 2020

Evidence Based Defect Responses

Study to provide hard evidence to identify appropriate response times for addressing safety defects aligned to a risk-based approach thus enabling consistency across Scotland and allowing greater efficiency and value for money in maintaining the network.

Completion expected: spring 2020

2019

• Strategies for Managing Hazardous Slopes (May 2019)
• Speed Management Techniques in Urban Settings (Feb 2019)
• Electronic Data Monitoring of Resurfacing Works (Feb 2019)
• An analysis of early-life skid resistance of SMAs on the Scottish trunk road network (Feb 2019)

2018

• QRA for landslides (Oct 2018)
• Introduction of LED Equipped Personal Protective Equipment (June 2018)
• LEAN Construction in Road Maintenance (Apr 2018)
• Landslide Monitoring and Modelling (Mar 2018)
• Review of Pedestrian Guidance LTN1/95 (Mar 2018)
• SRRB – Final Assessment of Geometric Layout of Type A Lay-bys (Mar 2018)
• Cost Benchmarking (Feb 2018)
• Star Paths (Feb 2018)
• Sitezone Proximity Warning Sensor (Feb 2018)
• Dealing with coal tar bound arisings (Jan 2018)

2017

• Route Safety Strategy (Nov 2017)
• Renewable Energy Generation and Distribution from Road Network Assets (Oct 2017)
• Trials of Brine Spreading Performance on Scotland’s Roads: Phase 3 (Oct 2017)
• EME2 with Softer PEN Bitumen (Phase 2) (Aug 2017)
• A procedure for justifying aggregate use based on in-service skid performance (Aug 2017)
• SCANNER Research (Jul 2017) 
• High speed friction assessment of TS2010 (July 2017)
• The Value of the Trunk Road Network to Society and Economy in Scotland (Mar 2017)

2016

• Investigating the Requirement for Median Safety Barriers on Loop Ramps (Nov 2016)
• Long term damage to roads (compaction) (Sep 2016)
• Road Marking Durability & Adhesion to TS2010 (Aug 2016)
• Effectiveness of automatic trash screen (Jul 2016)
• Review of hydraulically bound materials for use in Scotland (Jul 2016)
• Trial of surface dressing with SAMI: Final report (Jul 2016)
• Best Practice guide for the selection of pothole repair options (Jun 2016)
• Locating Underground Drainage Apparatus (Mar 2016)

2015

• Recycled tyres in noise barriers (Nov 2015)
• Timber transport planning tool (Oct 2015)
• Review of road side advertising (Oct 2015)
• Brine spreading trials (Jul 2015)
• Road drainage and flood risk management (Jul 2015)
• EME2 with Softer PEN bitumen (Jun 2015)
• Durability of thermoplastic road markings (Apr 2015)
• Dealing with Tar Bound Arisings and Producing a Safe System of Work (Mar 2015)

2014

• Tourist sign research (Apr 2014)
• Investigating glowing roads (Mar 2014)