3/8. The collision team investigate a late-night crash on an unlit dual carriageway. They are stunned to discover the seriously injured man was travelling on an electric scooter. Also in HD. [S]
2/8. When a cyclist dies just nine minutes into a time trial on a dual carriageway, a van driver's arrested. But a single mark on the road surface raises more questions than answers. Also in HD. [S]
1/8. A road worker is hit by a modified car during a police pursuit. However, when the driver fails to stop, the race is on to track the car down and bring the offender to justice. Also in HD. [S]
2/4. A pedestrian is seriously injured after being struck by a car in a residential street, but police are suspicious of the teenaged driver's version of events. Also in HD. [S]
4/4. When a woman dies after being hit by a lorry on her way to play bingo, the team must reconstruct the scene of the crash to find out who's to blame. Also in HD. [S]
3/4. It's Friday night, and desperate 999 calls start flooding in to report a car travelling the wrong way along the motorway - but it still ends in tragedy. Also in HD. [S]
2/4. A pedestrian is seriously injured after being struck by a car in a residential street, but police are suspicious of the teenaged driver's version of events. Also in HD. [S]