Jersey Police want to hear from anyone who has any footage of the crash on the St Clement's main road on Wednesday 27 April.
It involved a red Suzuki and a white van at the junction with Rue de Samares at around 8:30am.
The drivers of both vehicles were taken to hospital for treatment.
One has been released and one remains in a stable condition.
Police officers, ambulance crew, and fire service personnel attended the scene. RNLI staff, who happened to be in the area, were first on the scene and attended to the drivers.
Anyone with information is asked to call the police on 612612 or Crimestoppers anonymously on 0800 555 111.
Rise in Jersey workers with grievances about their employer
Burst water main sends water soaring on Kensington Place
LOOK INSIDE: Jersey's Corbière lighthouse turns 150!
A quarter of government-owned buildings have 'major defects'
Pedestrian injured in collision outside Jersey's bus station
Young people in Jersey asked to set Children's Commissioner's priorities
Public survey opens into future of Grève de Lecq site
Corbière lighthouse lit gold for landmark anniversary
