At the start of a busy bank holiday weekend, patrol manager Marrissa deals with a high-speed crash outside Leeds that looks like it could be potentially fatal, while 50 miles south, Alex and Steve race to a vehicle fire.

Patrollers Mick and Mike are called to a potentially fatal incident. A man is reported running across a dual carriageway near Nottingham and a desperate call from an SOS phone soon explains why - his car has broken down on the blind corner of a slip road and his wife and children are still inside. Near Leeds, people are spotted illegally walking along the M1, so patrollers Gareth and Nick are sent to intercept them.