Explanation: When you park a vehicle facing uphill and on the left, turn the steering wheel to the right. If the parking brake fails, this will give the front wheels the least distance to travel before wedging against the kerb, preventing the vehicle from rolling further. It's also a good idea to leave the car in gear, or select 'P' on an automatic.
Category: Band 2 traffic signs and signals
References: The official DVSA guide to driving: section 9, Highway code: rule 252