I think there are problems with people who tailgate. they want to go fast by pressuring you. tail gating happens everywhere. it's a personal issue many drivers have. they have no patience. they are in a hurry. perhaps when an accident ocuurs due to tail gating then they will realise it is too late. and by the way, tail gaters do drive pretty fast (most of them I have encountered anyway). but driving 10-15 km/h faster than the average driver means very little in reducing travel time. they are simply using more fuel, costing themselves more, and pose as an danger to the roads.