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Guide To: HS2 Vehicle Safety Measures

05 July 2018

Broadly speaking the vehicle safety measures for working on HS2 (High Speed Two) sites that apply are taken from the CLOCS standard. The CLOCS standard was aligned with the FORS Silver accreditation in June 2015.

It is worth emphasising that access to any site by a UK-registered vehicle will only be permitted when the following minimum vulnerable road user safety kit has been fitted. This has to be achieved by the fifth visit of the vehicle in any 12-month rolling period so may not apply for one-off visits for example.


Safety measure requirements

All vehicles must have back and side warning pictorial stickers, to a design either approved or promoted by HS2 themselves.

Vehicles over 3.5t shall have, as an addition;

  • Side under-run protection on both sides (except where site conditions negate this requirement, and has been on an agreed site-by-site basis with HS2)
  • Audible left-turn warning alert
  • Blind spot elimination or minimisation products – as far as practicable around the front, rear and sides of the vehicle through indirect vision aids and driver audible alerts (such as scanning and camera systems)


Blind spot driver aids

All vehicle aids shall comprise of Class IV, V and VI mirrors appropriate to the size of the vehicle and as a minimum, one of the following;

  • Side scan detection system
  • Viewable camera system
  • Left-turn sensor system fitted to the vehicle front nearside
  • Collision avoidance system fitted to the vehicle front nearside

It is important to know that Fresnal lenses are not considered an appropriate solution to minimising blind spot areas.


Additional vehicle requirements

As vehicles cannot use vehicle hazard lights at any time on an HS2 site, except when the vehicle is broken down.

Therefore, it is essential that vehicles have working beacons fitted or immediately available for use, if being used for works on haul roads. They must also be checked every day.

There are additional vehicle requirements in place when entering or exiting an HS2 holding area or site;

  • Vehicles must not have tinted windows, other than factory fitted tinting
  • They must also have clean, standard number plates
  • They can only carry passengers for the number of seats fitted
  • Under no circumstances should a vehicle carry alcohol
  • All vehicles must carry a first aid kit (with the exception of visitor vehicles or single/infrequent visit delivery vehicles)
  • Vehicles must not carry pets or children
  • Where it is specified by an agent/employer on site, vehicles must be fitted with winter tyres


This information was obtained directly from HS2 Ltd and contains information detailed within Section 5.8 of their Route-wide Traffic Management Plan, which is available to download in full at

Last updated: 13 June 2018

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