A1: Highway Patrol

The innocent party in a three-car smash ends up on the wrong side of the law. A huge operation is launched to move a 300-tonne load up the A1. (S4, ep 4)

The innocent party in a three-car smash ends up on the wrong side of the law. A huge operation is launched to move a 300-tonne load up the A1. (S4, ep 4)

Police face a difficult job freeing a fragile driver from a stricken vehicle. Traffic cops seize a car being driven with no insurance and no licence. (S4, ep 5)

Police face a difficult job freeing a fragile driver from a stricken vehicle. Traffic cops seize a car being driven with no insurance and no licence. (S4, ep 5)

Police face a difficult job freeing a fragile driver from a stricken vehicle. Traffic cops seize a car being driven with no insurance and no licence. (S4, ep 5)

Police face a difficult job freeing a fragile driver from a stricken vehicle. Traffic cops seize a car being driven with no insurance and no licence. (S4, ep 5)

A city centre bus collision leaves a pedestrian fighting for her life. Freezing temperatures turn an A1 slip road into an ice rink. (S3, ep 2)

A city centre bus collision leaves a pedestrian fighting for her life. Freezing temperatures turn an A1 slip road into an ice rink. (S3, ep 2)

A breakdown blocks a lane and leads to a crash in the queue. Data disaster looms when a paper trail is left blowing in the wind. (S3, ep 5)

A breakdown blocks a lane and leads to a crash in the queue. Data disaster looms when a paper trail is left blowing in the wind. (S3, ep 5)

Lives hang in the balance when a car careers off the A1 closing the road. A coach-load of concert goers have to be evacuated after it breaks down. (S2, ep 2)

Scottish police deal with a terrifying caravan crash. Sprotbrough traffic officers can't believe their eyes. And it is one L of a day for one learner driver. (S3, ep 3)

Scottish police deal with a terrifying caravan crash. Sprotbrough traffic officers can't believe their eyes. And it is one L of a day for one learner driver. (S3, ep 3)

Lives hang in the balance following a head-on collision. Trouble brews when a beer tanker suffers a blowout. (S3, ep 6)

Lives hang in the balance following a head-on collision. Trouble brews when a beer tanker suffers a blowout. (S3, ep 6)

Police race to the rescue when a caravan overturns on the A1. Traffic officers must quickly deal with two vehicles abandoned in dangerous locations. (S4, ep 6)

Police race to the rescue when a caravan overturns on the A1. Traffic officers must quickly deal with two vehicles abandoned in dangerous locations. (S4, ep 6)

Police race to the rescue when a caravan overturns on the A1. Traffic officers must quickly deal with two vehicles abandoned in dangerous locations. (S4, ep 6)

Police race to the rescue when a caravan overturns on the A1. Traffic officers must quickly deal with two vehicles abandoned in dangerous locations. (S4, ep 6)

Emergency crews are called out to free a man trapped in his car. Traffic officers help a motorist stranded in freezing conditions. (S4, ep 7)

Emergency crews are called out to free a man trapped in his car. Traffic officers help a motorist stranded in freezing conditions. (S4, ep 7)

Emergency crews are called out to free a man trapped in his car. Traffic officers help a motorist stranded in freezing conditions. (S4, ep 7)

Emergency crews are called out to free a man trapped in his car. Traffic officers help a motorist stranded in freezing conditions. (S4, ep 7)

A tragic accident leaves a biker fighting for his life. Traffic officers track down pedestrians taking a dangerous path alongside the carriageway. (S4, ep 8)

A tragic accident leaves a biker fighting for his life. Traffic officers track down pedestrians taking a dangerous path alongside the carriageway. (S4, ep 8)