Why freeway traffic comes to a crawl, stop

Sometimes when you're driving on the highway, traffic comes to a crawl or stop. Usually, it doesn't take much to figure out why. When traffic speed does pick up again, you may see a car pulled over with a popped hood or flat tire. Sometimes, you roll up moments after a crash. Perhaps, a CHP cruiser is stopped along the side of the road with an officer pointing a speed detecting device toward you and other oncoming vehicles. Other times, you'll find an officer parked behind a traffic scofflaw. Other explanations for the brake lights are vehicles getting on and off the freeway, as well as the lane jockeying associated with those movements. However, there are times when freeway traffic goes from 65-0 mph and back up to speed again with no sign of trouble. Below is a link to an article that explains the mystery behind traffic slow downs, sent in to Street Smarts by a friend in law enforcement. http://www.bitrebels.com/lifestyle/why-do-freeways-come-to-a-stop-infographic/.
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One Response to Why freeway traffic comes to a crawl, stop

  1. Tom Cole says:

    A couple of other slowdown situations occur: (1) traffic slows down on highway 1 northbound approaching 41st Ave. and doesn’t resume speed until after the lit up amber alert sign (slow readers?); (2) northbound highway 17 about 1/2 mile before the summit u2013 where the road grade becomes steeper (happens on weekends).

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