At about 11:50 pm yesterday, in the direction of G40 Shanghai Shaanxi Expressway Yangtze River Bridge to Chongming, a maintenance vehicle in the rear end collision operation of a car was seriously deformed, the driver and one passenger in the car were killed, another three passengers were injured, and no one in the maintenance vehicle was injured. The injured in the car have been sent to hospital for treatment. The specific cause of the accident is under investigation.