travel speeds and throughput aren't necessarily related. Recall that car spacing is usually instructed to be "2s". the throughput is 1 car/2s. thats regardless

travel speeds and throughput aren't necessarily related. Recall that car spacing is usually instructed to be "2s". the throughput is 1 car/2s. thats regardless of speed. Speed dictates the length of the yellow light, often about 1s for every 10mph, but the actual throughput is the same regardless of speed.