The coordinate ramp signal(naive ramp) is set up as 3 seconds on a green light on each lane of the two lanes on-ramp and 4 seconds on a red light on both two lanes. The traffic light program is based on personal experience of using I-580, 101 and 280 highway ramp meter. The fig.\ref{635631} shows that ramp metering case is, generally, better than baseline in terms of speed and travel time over the simulation hour. Inspected area speed is increased to 9.38 mph from the baseline speed. The travel time also decreased to 10.28 seconds.