At one time a particular subreddit* was quite insistent that it is always the case that going the speed limit always results in the same commute time as speedin

At one time a particular subreddit* was quite insistent that it is always the case that going the speed limit always results in the same commute time as speeding. No matter the city. I tried it in Vancouver, and my commute went from 45 mins to 65. The bulk of traffic does 5-10km/h over the limit, so perhaps traffic light timing is based on that. * Reddit is blocked at work, but it was probably something like r/townplanning