I have one confusion. Suppose I am in a four lane road were the speed limit is 80km/H and you are in the right lane say going in 80KM/H . If somebody from back who is coming say 100km/H am pressing horn harshly. Am I suppose to change the lane and give way, since I am already in the maximum allowed speed? In night time such lane changes will cause accidents. And if some body want to brake the rule(crossing the speed limit) then it should not be at the cost of others who are obeying it. May be I am wrong> Please give your opinion.