A zipper merge is only effective if everyone is doing it
Posted on: November 20, 2019 at 15:49:17 CT
kmawv8 KC
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Otherwise, it causes cars in two lanes to basically come to a complete stop to let people in and slows everyone down. Merging whenever you can within the flow of traffic, before it's bottlenecked to a standstill, is the best course of action.