Simply put, trucks have a great deal more mass, both in terms of size and weight, than passenger vehicles. When a commercial truck, including eighteen-wheelers, construction trucks, and logging trucks, gets involved in an accident, it substantially increases the force applied to passenger vehicles. Commercial trucks take longer to slow down or to stop completely, which also raises accident risk when drivers cut them off or stop suddenly in front of them. Many big trucks also carry hazardous cargo that can cause further damage to passenger vehicles and the people in them.