One of the goals of you sitting at a red light is to create a cluster of traffic congestion — multiple vehicles that can travel as a group — with the space between groups being used by drivers who need to make turning movements. This is often difficult to perceive when one is driving, but it becomes really obvious when a person views it while on foot. Traffic signals are used to create traffic congestion so that there can be gaps in the traffic flow. There is a certain absurdity that keeps recurring, especially when engineers and traffic planners speak of this approach as efficient. The higher
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