Rule 239

Use off-street parking areas, or bays marked out with white lines on the road as parking places, wherever possible. If you have to stop on the roadside:

• do not park facing against the traffic flow
• stop as close as you can to the side
• do not stop too close to a vehicle displaying a Blue Badge: remember, the occupant may need more room to get in or out
• you MUST apply the handbrake before leaving the vehicle
• you MUST ensure you do not hit anyone when you open your door. Check for cyclists or other traffic
• it is safer for your passengers (especially children) to get out of the vehicle on the side next to the kerb
• put all valuables out of sight and make sure your vehicle is secure
• lock your vehicle.

Read more about waiting and parking.