A crash has just happened. A casualty is lying in the busy road. What’s the first thing you should do to help?

Explanation: At the scene of a crash, your first priority is to warn approaching traffic of the obstruction ahead. You can do this by displaying an advance warning triangle (but not on a motorway), switching on hazard warning lights or any other means that doesn't put you or anyone else at risk.

Category: Band 1 road procedure

References: The Official DVSA Guide to Driving: Section 16, Highway Code: Rule 283