I was watching a civil engineer’s video where he mentioned that in some cases where there’s a traffic jam but no space to widen the road or increase lanes, engineers resort to making the road longer and/or decreasing the speed limit. How does that help?
My first thought was that it acts as a buffer but since it’s still the same road technically, the cars entering and exiting is still the same therefore the buffer would eventually be filled up and the bottleneck will pop up again.
Edit: for more context. The road is a 2-lane highway in a game video (cities skylines 2) which has no traffic light and only 1 or 2 exit ramps at the end into the city.
In: Engineering
It depends on what’s causing the traffic jam. On highways if you have too many on/off ramps in too short of a strip, it causes congestion because people need to switch lanes to get on/off and they need to have room to speed or slow down. On streets, too many intersections in a short strip can cause congestion for similar reasons.
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