Roads that function as expressways and divided highways have high speeds and greater risk of high-impact crashes.
Expressways and divided highways have played an important role in traffic flow. They have high speed lanes which allow traffic to move faster and faster. Expressways and divided highways are used by emergency service vehicles.
Vehicle moves very fast on expressways and divided highways. We know that high speed increases the risk of collision.
So, there is also a greater risk of high-impact crashes.