Video 1 Timings:
(all times relative to start of video)

Start of Green Phase: 				 2.399 s
First observed movement of vehicle 1: 		 2.999 s
1st vehicle's rear wheel crossing stop line: 	 5.265 s
2nd vehicle's rear wheel crossing stop line: 	 7.565 s
3rd vehicle's rear wheel crossing stop line: 	 9.731 s
4th vehicle's rear wheel crossing stop line: 	11.931 s