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Is there a speed limit of 100 in highway tunnels?

4 Answers
Aliyah
07/29/25 11:46pm
Highway tunnels have a speed limit of 100, exceeding which is considered speeding. Here are precautions for novices to safely pass through tunnels: Maintain safe distance: Keep a safe driving distance of over 100 meters inside the tunnel, avoid excessive speed to prevent accidents. Turn on lights: Since tunnel lighting is quite dim, turn on headlights, width markers, and taillights 50 meters before entering the tunnel entrance. Reduce speed: Slow down to avoid collision accidents. Also, hold the steering wheel firmly before exiting the tunnel to prevent crosswinds at the tunnel mouth from affecting vehicle direction. If a breakdown occurs inside the tunnel and the vehicle can still move, try to drive it out of the tunnel immediately - parking inside is strictly prohibited. If the vehicle becomes immobile, all occupants should exit immediately and move along the tunnel edge to roadside barriers, then call for rescue to prevent secondary accidents caused by low visibility in the tunnel.
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LaElliot
08/16/25 3:04am
I've driven through quite a few highway tunnels, and there are indeed some with speed limits of 100 km/h, like certain tunnel sections along the coastal expressway where 100 km/h is standard. But it's not always the case—mountain area tunnels might have limits reduced to 80 or even 60 km/h, depending on the specific road design. As a driver, I have to keep an eye on road signs constantly, especially since tunnel lighting conditions vary greatly, and speeding can easily lead to accidents. I remember last time I didn't notice the speed limit in a tunnel and almost got fined—now I've made it a habit to use navigation apps for advance notifications. Safety comes first—it's not worth risking big losses for small gains.
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McJuliette
10/19/25 3:58am
When driving through highway tunnels, I often encounter speed limits of 100 km/h, mainly in plain areas. For example, the Pearl River Delta section I frequently travel has such cases. But don't take it lightly—not all tunnels are the same. In mountainous areas or during rainy weather, the limit may drop below 80 km/h. Maintaining speed control is key to preventing accidents, as visibility is poor in tunnels and speeding reduces reaction time. Take my advice: checking your vehicle's condition and speed limit signs can avoid most troubles. Driving experience has taught me to slow down before entering tunnels—ensuring safety and saving on fines.
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DiHannah
12/02/25 4:33am
I've seen speed limits of 100 in tunnels, which are more common on urban expressways. The speed limit is to prevent accidents, as dim lighting affects judgment. As a cautious driver, I follow the rules and slow down to ensure my car is in good condition without any faults. It's crucial to watch for road signs or navigation app prompts and avoid speeding.
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