In traffic control, barriers may include which of the following?

In traffic control, barriers may include which of the following?

• A. Patrol car
• B. Flares
• C. Traffic cone
• D. Stop sign

Answer: (A)

In traffic control, a barrier is something that physically blocks or protects a portion of the roadway to create a safe work zone. A patrol car fits this role because it can be parked in a lane to block traffic and, with lights on, clearly signals drivers to slow down or stop, creating a protected space for workers or incidents. Flares, while useful for warning, do not stop or block traffic on their own. Traffic cones help delineate areas and channel traffic, but they’re movable, lightweight guides rather than solid barriers. A stop sign directs drivers where to go at an intersection, not block a lane. So, the patrol car is the best example of a barrier in that context.

In traffic control, a barrier is something that physically blocks or protects a portion of the roadway to create a safe work zone. A patrol car fits this role because it can be parked in a lane to block traffic and, with lights on, clearly signals drivers to slow down or stop, creating a protected space for workers or incidents. Flares, while useful for warning, do not stop or block traffic on their own. Traffic cones help delineate areas and channel traffic, but they’re movable, lightweight guides rather than solid barriers. A stop sign directs drivers where to go at an intersection, not block a lane. So, the patrol car is the best example of a barrier in that context.