This guideline covers road speed limits, 20 mph zones and engineering measures to reduce speed or make routes safer.

NICE has also produced guidelines on unintentional injuries: prevention strategies for under 15s and unintentional injuries in the home: interventions for under 15s (the former covers strategies for the home, on the road and outdoors).


This guideline includes recommendations on:

Who is it for?

  • Local highway authorities and local strategic partnerships
  • Directors of public health and health professionals
  • School travel planners
  • Children, young people, their parents and carers and other members of the public

Is this guideline up to date?

October 2019: We have found no new evidence that affects the recommendations. For more information, see the surveillance decision

Guideline development process

How we develop NICE guidelines

Your responsibility

The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian.

All problems (adverse events) related to a medicine or medical device used for treatment or in a procedure should be reported to the Medicines and Healthcare products Regulatory Agency using the Yellow Card Scheme.

Local commissioners and providers of healthcare have a responsibility to enable the guideline to be applied when individual professionals and people using services wish to use it. They should do so in the context of local and national priorities for funding and developing services, and in light of their duties to have due regard to the need to eliminate unlawful discrimination, to advance equality of opportunity and to reduce health inequalities. Nothing in this guideline should be interpreted in a way that would be inconsistent with complying with those duties.

Commissioners and providers have a responsibility to promote an environmentally sustainable health and care system and should assess and reduce the environmental impact of implementing NICE recommendations wherever possible.