Which interval occurs after red and allows clearance before green?

Which interval occurs after red and allows clearance before green?

• A. Yellow Clearance Interval
• B. Red Clearance Interval
• C. Green Interval
• D. All-Red Interval

Answer: (B)

The interval after a red signal that gives vehicles time to clear the intersection before traffic can move again is the red clearance interval. This safety buffer is built into signal timing to prevent vehicles that were already in the intersection from being hit when the opposing movement turns green. It sits after the red phase and before the next green for the conflicting approach, ensuring a clean and safer transition. The yellow interval is the warning that red is ending, and the green interval is when movement is allowed. An all-red interval is a separate, all-directions-red period used in some timings to further guarantee clearance, but the specific description in this context points to the red clearance interval.

The interval after a red signal that gives vehicles time to clear the intersection before traffic can move again is the red clearance interval. This safety buffer is built into signal timing to prevent vehicles that were already in the intersection from being hit when the opposing movement turns green. It sits after the red phase and before the next green for the conflicting approach, ensuring a clean and safer transition. The yellow interval is the warning that red is ending, and the green interval is when movement is allowed. An all-red interval is a separate, all-directions-red period used in some timings to further guarantee clearance, but the specific description in this context points to the red clearance interval.