HOLD your HORN

I wonder.
Why do people have to be frantically hitting their horn at the time trafficlight turning green?

First : we see the greenlight as well. Take it easy.

Second : every vehicle with engine in it needs time to accelerate. There's some seconds needed to increase the speed and moving forward. Unless you hit the road with Lamborghini Murcielago that has ability to accelerate from 0 to 100 km/hrs in 3,3 seconds.

Third : even if the first row vehicles moving in no time when the light turning green, one physic law I don't even bother to find its name (because it's just make sense) will multiplied lag time for every next row to move. So if you're in umpteenth row, please, be patient, consider acceleration time and lag time of vehicles that line up forward and no need to dinn dinn honk honk beep beep whatever like maniac. We hear you. Sheesh.