Rush hour traffic is going so slow that non-aggressive driving will only cost you a low single digit percentage of travel time, which will all be made up at the

Rush hour traffic is going so slow that non-aggressive driving will only cost you a low single digit percentage of travel time, which will all be made up at the first red light. I routinely drive at 90km/h on the main 100km/h stretch of my 28km commute. 23km at 90km/h, and I pull up next to or immediately behind the person that passed me a few minutes ago: the difference in arrival time between a car doing 120 and another doing 90 on that stretch is 4 minutes, assuming they hit 120km/h as soon as they leave the lights at one end of the road. If they have to overtake slower traffic like busses, cranes and me, they get less of a head start. Eleven minutes versus fifteen on the only stretch where aggression makes a difference. There is no way in the world that this counts as "double" the time. The rest of the trip is the same average speed of about 25km/h, with the more aggressive driver getting to use their brakes more than me. Red lights are the great equaliser. Aggressive driving buys you one or two cycles of the traffic lights, along with a much higher fuel and maintenance bill.