Links to other TRL Websites

Popular Links

Latest Content

Current Projects

Snap poll

Stay informed

Discover more about TRL by signing up for news

You’ll receive alerts about world-class reports and real world trials on a wide range of transport, mobility and infrastructure topics. You’ll know when we publish market leading research, unique insights, and fact based analysis.

Be the first to hear our opinion and insight on the future of transport.


Sign up to participate in research about use of UK roads and new vehicle technologies

The results of our research inform government policy, the development of standards, and good technology design.

You may be invited to use our vehicle simulator at Crowthorne, or to use your own vehicle on the road, or simply to complete a survey.

Every trial is different, and provides essential evidence to advance our understanding.

At the heart of everything is our mission to improve safety: your contribution is essential.

Get in Touch

Have a question? Speak to one of our experts today

From the Archives

January 1985

Safety aspects of the Sinclair C5 electrically assisted pedal tricycle

This report looks at the likely accident rate for the C5 on public roads and attempts to relate this to the rate for pedal cycles. As we see more and more micro-mobility options competing to build a user base, this is a timely reminder of the need for rational safety assessment of technologies which promise many benefits. Today TRL would compare a powered mobility mode like the C5 with a moped rather than a pedal cycle.

Open Report