
Normally, the maximum speed limit on expressways is 120 kilometers per hour. Additional information is as follows: 1. Speed limit: Speed limit generally refers to the regulation of a specific range of driving speeds over a certain distance of road. Its primary purpose is to preemptively alert drivers to reasonably control their speed in subsequent sections of the road ahead and to prevent the dangers of speeding. Speed limits are an indispensable and most crucial aspect of road transportation safety. 2. Expressway: Expressway refers to high-level speed, compared to medium and low speeds. In environments where low speed is predominant, low speed is considered normal or standard speed, whereas in environments where medium speed is predominant, medium speed is considered normal or standard speed.

I always drive at 120 km/h on the Chang-Zhang Expressway, as that's the speed limit for most sections. However, the speed drops to 80 km/h when passing through the tunnel cluster near Taoyuan. Once, my friend got caught by a mobile speed camera there because he didn't notice the change. Nowadays, expressways are quite smart—like the newly widened section near Yiyang, which uses variable speed limit signs that automatically adjust to 100 km/h during rain. Be careful with the newly built interchange bridge on the eastern section of Chang-Zhang Expressway—the ramp speed limit is only 60 km/h. Last week, I saw a three-car pileup there caused by speeding. The most annoying part is the frequent construction zones near Shadi, where speed limit signs are hidden behind barriers. It's safer to use real-time navigation alerts.

Having driven the Chang-Zhang Expressway over a dozen times, the speed limit for passenger cars is generally 120 km/h throughout. However, extra caution is needed in the mountainous section between Cili West and Yanghe, where electronic signs indicate a 100 km/h limit on continuous curves. My younger cousin, who drives a truck, needs to be even more careful—heavy trucks are explicitly limited to 80 km/h near the Zhangjiajie toll station, with particularly severe fines for overloading. I remember during last year's rainy season on the Changde section, the electronic displays automatically switched to an 80 km/h limit when there was severe waterlogging on the road. It's advisable not to rely solely on mobile navigation, as some temporary construction zones have a 40 km/h limit that requires visual identification. While resting at the Reshi Service Area, I heard from traffic police that nearly half of the monthly speeding accidents on this expressway occur in tunnels.

Last month, I drove on the Chang-Zhang Expressway to Fenghuang, and the car navigation showed a speed limit of 120 km/h for the entire route. However, just after passing Taizimiao, I saw a construction sign limiting the speed to 80 km/h, so I hit the brakes immediately. When crossing the Huangjiapu Bridge, I felt the bridge deck was a bit shaky, and upon spotting the 100 km/h speed limit sign, I eased off the accelerator. The return trip was more troublesome due to rain, with all the electronic signs in the Changde section flashing red 'Rainy day speed limit 100 km/h.' Extra caution was needed in the tunnels, especially at the entrance of the Xuefeng Mountain Tunnel, where a bright 80 km/h speed limit sign was displayed, and speed cameras inside kept flashing. The most frustrating part was the highway exit ramp, where a 40 km/h speed limit sign was hidden behind bushes, almost causing me to miss the exit.


