There are several common causes of accidents on expressways. First, just like on side roads, rear-end collisions are a frequent occurrence. Traffic may come to a stop due to an emergency in the roadway or just rush hour, and an inattentive driver may not recognize this stopped traffic. Another common cause of expressway accidents stems from reckless driving. Cars traveling at different speeds, changing lanes suddenly, and cutting other cars off are all common causes of expressway accidents.