que: I don't mean dues to a huge accident or construction. It doesnt make sense, an endless stretch of road with no stop signs accidents construction come to a complete stop. When all the cars are going the same way. I've heard something about a Que theory or something but having trouble finding the actual reason|||It's a chain reaction. One person slows down for whatever reason. Then the person behind them does the same because they get too close. Then the person behind them has to do the same. On and on it goes, until you're stopped. Believe me, every morning I grit my teeth in frustration as I wonder who the culprit is that started the whole thing. This article will interest you: http://www.newscientist.com/article/dn13鈥?/a> Japanese scientists recreated traffic jams to identify the causes.|||Highways don't move,traffic does.The traffic stops for several reasons.Among them are volume and choke points. Roads are rated on the number of vehicles they can carry in a given amount of time,over a given distance. As an example-100 cars per minute between point A and B.If more cars are on the road this decreases the speed vehicles can travel. Exits,rest stops and toll plazas cause traffic to slow down resulting on a slowing of traffic. The volume of cares traveling on the road with drivers talking on cell phones,eating,traveling in the fast lane slowly,etc. can cause traffic to jam up and slow to a stop.