Driving needs no hasty (pressure). In a distance of 30 kilometres (km) if you drive your car with 60 km instead of 80 or 90km, the time you are late in your destination is about 1 or 2 minutes. This is also because the traffic lights with stop you sometime. The minutes you are late you spend them in house many times by doing nothing useful or resting. The lack of anxiety in driving, if everyone goes to the speed limits and cars are on the same line makes driving more secure and pleasuring. Also by adjusting the speed limits of the roads (according to safety standards) with the traffic lights open gives a smooth and even faster way in your destination. So in the distance of 30km's we mentioned if everyone goes the same safe speed with lights to the green more time than usual, then the rush hours clears faster and intersections with smaller roads move better. Also the offices can adjust the employees arriving time with 10 minutes intervals in every area so that not all cars are on the road at the same time (rush hours). Think at the office not all minutes people are working, they talk or eat so arriving a bit late is not a problem.