Video 4 Timings:
(all times relative to start of video)
(crossing measured across yellow intersection line)

Start of Green Phase: 				 0.041 s
First observed movement of vehicle 1: 		 can not be observed
1st vehicle's rear wheel crossing stop line: 	 3.941 s
2nd vehicle's rear wheel crossing stop line: 	 6.573 s
3rd vehicle's rear wheel crossing stop line: 	 9.138 s
4th vehicle's rear wheel crossing stop line: 	10.705 s
5th vehicle's rear wheel crossing stop line: 	12.838 s