In timing plans, what does a green split define?

In timing plans, what does a green split define?

• A. The duration of the red phase
• B. The fraction of cycle time allocated to a green phase for a given approach
• C. The total cycle length
• D. The pedestrian crossing duration

Answer: (B)

Green split represents the portion of the signal cycle that is given to green for a specific approach. It’s the fraction of cycle time allocated to that green phase, which determines how long vehicles on that approach can move each cycle. expressed as a percentage of the cycle length, it translates into a concrete green time (for example, with a 90-second cycle and a 40% green split, that approach gets about 36 seconds of green per cycle). The split sits alongside other timing elements like red and yellow phases and lost time, so the sum of all greens isn’t necessarily 100% of the cycle. This is different from the total cycle length, the red phase duration, or the pedestrian crossing duration, which are separate components of the timing plan.

Green split represents the portion of the signal cycle that is given to green for a specific approach. It’s the fraction of cycle time allocated to that green phase, which determines how long vehicles on that approach can move each cycle. expressed as a percentage of the cycle length, it translates into a concrete green time (for example, with a 90-second cycle and a 40% green split, that approach gets about 36 seconds of green per cycle). The split sits alongside other timing elements like red and yellow phases and lost time, so the sum of all greens isn’t necessarily 100% of the cycle. This is different from the total cycle length, the red phase duration, or the pedestrian crossing duration, which are separate components of the timing plan.