Why does traffic congestion occur on highways?

2 Answers
MaliaLee
07/24/25 5:00pm
Reasons for highway traffic congestion include: 1. Toll-free holidays on highways greatly stimulate car owners' enthusiasm for self-driving travel; 2. Accidents ahead on the highway prevent vehicles from passing; 3. Road construction on certain sections of the highway; 4. Severe weather conditions that prevent all vehicles from driving at high speeds, turning the highway into a low-speed road. Traffic congestion has become a common problem in modern society, especially in developing countries, significantly affecting people's work efficiency and social development. From traffic congestion, a culture of congestion has emerged, attracting people's attention and research. Highways are multi-lane roads exclusively designed for directional and lane-specific vehicle travel, with full access control. The average annual daily traffic volume on highways should ideally exceed 15,000 passenger cars, with a design speed of 80 to 120 kilometers per hour.
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WestonFitz
08/11/25 9:24am
I totally get the frustration with highway traffic jams! Last weekend, it took me two extra hours to get back from the suburbs. Normally, three lanes can handle the flow, but during holidays, the traffic doubles. One tap on the brakes by the car in front can cause a three-kilometer backup. The most infuriating part is those reckless lane changers cutting in line, forcing everyone in the lane to slam on their brakes. And don’t get me started on new drivers going 40 km/h in the fast lane, holding up a whole line of cars. The highway exit ramps are another headache—often squeezing four or five lanes down to two, creating a bottleneck. Tunnels? Forget about it. Where the speed limit is 80 km/h, there’s always someone crawling at 50 km/h, causing a long queue before the entrance. On the bright side, navigation apps are pretty smart now, giving you a 30-minute heads-up to avoid red congestion zones.
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