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Road Markings and Signage - Speed Humps

Dudley Council, in its capacity as the Local Highway Authority, is responsible for the provision, installation and maintenance of speed control measures and all associated signage within the public highway, including investigation into complaints of damage.

The Council recognises that road humps are an extremely effective means of controlling vehicle speeds and that they can play an important role in helping to cut personal injury accidents in line with the Governments road safety strategy to reduce the number of road traffic accidents nationally by 40% by the year 2010.

In order to maintain continuity, road humps are designed in line with national standards recommended by The Department for Transport (DfT). These standards having been initially recommended by the Transport Research Laboratory (TRL) following extensive research.

Speed control humps can sometimes lead to complaints about increased noise and increased vibration from traffic. They have however been proved to reduce traffic speed and they have been installed in many locations to good effect

Regulations governing the Layout of Speed Humps

Road humps are preceded by a ‘’Speed Reducing Feature’’ which is usually formed by a change of priority, for eg., traffic entering the system has firstly to turn sharp left or right into the traffic calmed road, or has to "give way". Sometimes mini roundabouts may also be used at the start of a system of humps.

The shape of speed control humps can have either flat tops or round tops and will generally be between 50mm and 100mm high, at least 2.75m long and extend over the full width of the road, except for a drainage channel at either end.

Many local authorities have, however, adopted the 75mm high hump as a standard as this has been found to be effective in reducing traffic speeds to around 22 mph. The 100 mm high humps reduce speeds to 17 mph on the hump itself but then tend to lead to speeds rising to 35 mph between the humps, causing excessive acceleration, braking and increased pollution.

Flat topped humps can be of any length and are often known as "speed tables". They are sometimes used to reduce the impact on long wheel base vehicles such as buses.

A variation to Speed Tables, known as Speed Cushions, may also be used along bus routes or roads which are of strategic importance to the emergency services as these will be of reduced width within the lanes of traffic and thereby allow the wider axle vehicles to pass without the same level of disturbance for passengers or patients who may be in a critical or sensitive condition.

Road Safety Benefits of Speed Humps

Road humps and/or speed cushions have been extensively used throughout the Borough as a measure to reduce the high level of personal injury accidents at identified hotspots. When considering the introduction of traffic calming measures the Council investigates very carefully the cause of road traffic accidents and the factors which may have affected driver behaviour. Once these factors have been identified we make a balanced engineering judgement as to how an accident has occurred and how we may be able to design out these accidents using various traffic calming tools at our disposal. For example, we do not exclusively look at introducing road humps; we may well consider alternative solutions such as mini roundabouts, surface treatments, improved signs and markings, chicanes etc.

Traffic Consultation

Please take a look at our ongoing traffic consultations and have a say in the future of transport planning in the Dudley Borough you can make a difference and we want to hear from you!

View Existing Traffic Regulation Orders Online

Parking restrictions require a Traffic Regulation Order (TRO) and are installed to improve road safety and reduce congestion. View the Traffic Regulation Orders Online, including links to car park tariffs and limited waiting restriction times.

Report a Problem

If you wish to report a problem with a damaged speed hump please use our online form, or contact us as per the details below.

Requesting a new speed hump

To request new speed hump you will need:

  • The intended location
  • Your name, address, telephone number, and email address
  • A brief description as to why the signs/road markings are required


All requests for new speed humps are dealt with by Traffic and Road Safety Section, please see the contact details below.

Further information