Four people were killed and one injured in a collision in Al Nasiriyah, Al Ain, on Wednesday. Abu Dhabi Police said that two modified cars were racing on the road when one of them clipped the other, causing it to spin out of control and hit a lamppost. Both the driver and the passenger were killed. The driver of the second vehicle also lost control and ran over two women who were crossing the road, killing them. No details about the pedestrians were available. <br/> Brig Salem Bin Marak Al Thaheri, director of Al Ain traffic department, said that the cause of the accident was racing in modified cars.<br/> <br/> He urged motorists to drive carefully and refrain from speeding or adding dangerous modifications to their vehicles.