4 ms·
The VA system detects how many cars are waiting to ensure that as many as possible make it through in a cycle (up to a limit), not detecting them as they are in
by count 12y ago
The VA system detects how many cars are waiting to ensure that as many as possible make it through in a cycle (up to a limit), not detecting them as they are inbound to keep the light green.
- WalterBright 12y agoThat's a familiar system, but it requires a car to come to nearly a full stop before the sensor picks it up. This leads often to the lights alternating so out of phase it produces the maximum delay for both streets.