Rumble strips should be used on single carriageways, TRL says

23/08/2019
Chris Ames

Transport research experts have called on Highways England to extend the use of 'rumble strips' to its single carriageway roads to improve safety.

TRL, formerly the Transport Research Laboratory, said its latest research highlights the benefits of installing rumble strips – continuous line marking with ribs across the line at regular intervals - along the side of single carriageway roads to mitigate run-off-road (RoR) incidents

It said the finding in a new report presents a good opportunity for Highways England to bring single carriageway sections of the strategic road network up to the same safety standard as the dual carriageway sections.

As Highways has reported, Highways England’s single carriageway roads have a higher casualty rate than the rest of its network and the government-owned company is making little progress against a target to improve roads, mainly single carriageways, that have a low rating for their inherent safety.

Weatherline Ribline edge of carriageway road marking from WJ Group

TRL said that rumble strips are seen internationally as one of the lower cost and easier to install road safety measures, which can achieve considerable incident reductions.

It said that in the UK they are placed primarily on the edge of dual carriageways while, many other countries also place rumble strips along the centre line of dual and single carriageways as well to mitigate head-on, side swipe and RoR incidents.

TRL added that new innovative rumble strip patterns, such as the sinusoidal design which produces less external noise, are increasingly being utilised in the USA and Europe for their higher benefits compared with traditional types.

It added that rumble strips may have some drawbacks, which need to be considered during site selection and placement design. These considerations and the international best practice in mitigating them are presented in detail in its report.

Highways England’s head of road safety, Richard Leonard, said: 'Rumble strips are already in place on our motorways, dual carriageways and some single carriageways. We commissioned this research to better understand the benefits of installing them on all of our single carriageways and will now carefully consider the findings.'

Paul Aldridge WJ Group sustainability director, said: 'Raised profile edge markings are a vital low cost engineering road safety measure. There is no doubt that they have saved countless lives by warning drivers who have inadvertently strayed out of lane.'

Traffic Signs Manual Chapter 5 - Road Markings (2019) states that two types of rumble strip are specified, one for use on motorways diagram 1012.2 (S11-4-12) and one for all-purpose roads with a hard strip or hard shoulder.

It details specifications for use and spacing for these including that the base marking must be no more than 6mm high. The upstand of the ribs above the base marking must not exceed 11mm for motorways and 8 mm for all purpose roads 1012.3 (S11-4-13).

Raised profile markings must not be used as part of any marking or in any circumstances other than as specified in section 2.6 the chapter states.

Highways jobs

Senior Traffic Engineer

East Riding of Yorkshire Council
£32,029 - £34,788 per annum
Currently seeking an enthusiastic and experienced individual to manage our Traffic Team. East Riding of Yorkshire
Recuriter: East Riding of Yorkshire Council

Ugobus Driver (multiple positions)

Essex County Council
Up to £18938 per annum
Please note that we have permanent, fixed term and relief contract opportunities on a part time, job share and flexible working basis. The salary is u England, Essex, Chelmsford
Recuriter: Essex County Council

Principal Transport & Infrastructure Planning Officer

Essex County Council
£52000 - £57570.0 per annum
Please note this is a two year fixed term contract with a potential for extension, subject to budget and workload. Job purpose Calling all transport P England, Essex, Chelmsford
Recuriter: Essex County Council

Food Safety Environmental Health Officer

Camden London Borough Council
£36,630 to £42,490
Seeking a highly motivated and experienced Environmental Health Officer to join our busy Food Safety team. Camden, London (Greater)
Recuriter: Camden London Borough Council

Policy Planner

London Borough of Richmond upon Thames and London Borough of Wandsworth
£25,327 - £36,486 depending on skills and experience
We have an exciting opportunity within the Spatial and Transport Planning service for 2 x Policy Planner roles... London (Greater)
Recuriter: London Borough of Richmond upon Thames and London Borough of Wandsworth

Highways Inspector

Cambridgeshire County Council
£19,554 - £23,836
Looking for candidates who have experience of highways maintenance and have a sound technical understanding of highways. Cambridgeshire
Recuriter: Cambridgeshire County Council

Street Services Recruitment Day

Royal Borough of Greenwich
Competitive Salary
This role involves collecting residents and business wheelie bins and waste containers you will work as... Greenwich, London (Greater)
Recuriter: Royal Borough of Greenwich

Assistant Tree Officer

Camden London Borough Council
£25,880 - £27,904
Looking for an assistant tree officer to join a busy Tree Section working with the most up to date arboriculture equipment’s and IT resources.  Camden, London (Greater)
Recuriter: Camden London Borough Council

Traffic Officer

Bedford Borough Council
£23,313 - £26,999 per annum
You will work as part of the Highways team providing specialist knowledge and advice on traffic management issues. Bedford, Bedfordshire
Recuriter: Bedford Borough Council

Vehicle Technician x2

Sandwell Metropolitan Borough Council
£24,313 - £28,785 per annum
Seeking to recruit two Vehicle Technicians, based at our Waterfall Lane Depot in Cradley Heath. Sandwell, West Midlands
Recuriter: Sandwell Metropolitan Borough Council

Senior Design Engineer - Guildford

Surrey County Council
£39,438 - £43,744 per annum
An opportunity has arisen within Surrey County Council's Highway Design & Delivery Team... Guildford, Surrey
Recuriter: Surrey County Council

Environment and Low Carbon Work Package Manager

Essex County Council
£38400 - £42420 per annum
Please note that this position is to be offered on a 3-year, fixed term contract.Interviews likely to be held week commencing 30th September 2019.Esse England, Essex, Chelmsford
Recuriter: Essex County Council

Director of External Operations

Somerset West and Taunton Council
£100,000
Somerset West and Taunton Council has been through a transformation that puts customers at the heart of everything we do. Taunton, Somerset
Recuriter: Somerset West and Taunton Council

Zero Emissions Network Officer

Tower Hamlets London Borough Council
£33,759 - £34,986
We are looking for an enthusiastic Zero Emissions Network Officer Tower Hamlets, London (Greater)
Recuriter: Tower Hamlets London Borough Council

Contract Supervisor

London Borough of Richmond upon Thames and London Borough of Wandsworth
£31,013 - £36,486 depending on skills, knowledge and experience
The role of Contract Supervisor (Waste and Street Cleansing) will require you to support ambitious plans to provide services for residents Richmond upon Thames, London (Greater)
Recuriter: London Borough of Richmond upon Thames and London Borough of Wandsworth

Flood Risk Manager

Birmingham City Council
£43,662 - £54,574
The role requires the post holder to be the lead professional for the Authority’s Flood Risk Management and drainage function Birmingham, West Midlands
Recuriter: Birmingham City Council

Head of Highways & Transport

Lewisham London Borough Council
up to £72,705
As our lead expert on highways and transport, you will set the direction and lead on all transport related matters Lewisham, London (Greater)
Recuriter: Lewisham London Borough Council

Highways on Fridays

Latest Issue

latest magazine issue
  • HIghways Awards shortlist revealed
  • Equity in transport
  • DMRB updates
View the latest issue

Latest Video