Read the following account of a collision. You are the investigating police officer. Explain how the collision could have been avoided.

-Vehicle A was parked alongside the right curb just behind vehicle B. The driver of vehicle A
me out of the dry cleaner's and hung the dry-cleaned clothes over the left rear window. The
driver entered vehicle A and checked for traffic in the rearview mirror. Seeing none, the driver
Pecan to move the vehicle away from the curb and into the traffic lane. Vehicle C, traveling in
he same direction and coming from behind vehicle A, crashed into the driver's side of vehicle
The impact pushed vehicle A into the left side of vehicle B.