A space where you can drive free of restrictions to your line of sight or path of travel

Your line of sight is the visible path of travel from your vehicle to the target area. This line can be blocked by a curve, the crest of a hill, a wooded area, a large truck, etc. If you cannot see around an obstruction, you must slow down and be ready to alter your position until you can reestablish a clear line of sight to your path of travel and targeting area.

What is space you can drive that is free of restrictions?

An open zone is space where you can drive without a restriction to your line of sight or to your intended path of travel.

What is a space not open to you because of a restriction in your line of sight or intended path of travel?

A closed zone means a space not open to you because of restriction in your line of sight or intended path of travel. Three searching ranges need to be evaluated in your path of travel. The process of searching critical areas of the traffic environment in a regular sequence is called an orderly visual search pattern.

What is the path of travel?

Path of travel is the series of continuous positions your vehicle takes in the process of moving to your target. While driving straight ahead you will normally stay in the middle of a driving lane unless other factors affect the position of your car and change your path of travel.

What is an open zone and closed zone?

Open: Space or area to operate within that is without restrictions to the line of sight or path of travel. • Closed: The space or area that is not available for the car's path of travel or there is a restriction to the driver's line of sight. An alternative path of travel must be identified.