Entitlement While Driving

When I am driving, one of my biggest pet peeves is listening to someone blow the car horn because someone else is essentially not traveling fast enough. Have you ever been at stop light that turned green, and the first car does not move? What makes this situation even worse, is when a driver three or four cars back blows their horn. Why does the fourth car back feel entitled to be the hurry-up police? It does not make sense to me, that someone not immediately impacted by the delay feels the need to beep his or her horn. The patients shown by the first three cars must not be contagious enough.
What is entitlement and who is entitled to what is a popular topic in politics, business and personal life. Entitlement is defined as the fact