What are the speed limits on urban roads and highways?
4 Answers
Urban roads with lanes have a maximum speed limit of 50 km/h, while urban roads without lanes have a maximum speed limit of 30 km/h. Here is some related information about road speed limits: Signage speed limits: These refer to the speed limits indicated by signs and markings on the road. The specific speed limit values are determined by transportation authorities based on various factors such as the road's design speed, functional type, geometric alignment characteristics, traffic flow, and roadside environment. Special time and weather speed limits: According to the Road Traffic Safety Law and its implementation regulations, when driving on ordinary roads during fog, rain, snow, sandstorms, or hail with visibility less than 50 meters, as well as when driving on icy or muddy roads, the speed limit is 30 km/h.
When driving on highways, I pay close attention to speed. Limited highways refer to speed-restricted expressways, like most highways in China, where the maximum speed limit is typically 120 km/h, and it may be adjusted to 100 km/h or lower depending on road conditions or weather. Unlimited highways refer to roads in some countries without universal speed limits, like certain sections of Germany's Autobahn, where you can really drive fast, but most people prefer to stay within 130 km/h for safety. Why are there speed limits? Mainly to prevent accidents and save fuel, plus cars get noisier at higher speeds. I advise beginners not to speed in rainy weather, as tire wear can affect braking. Maintain a safe distance, and don’t just watch the speedometer—also be aware of changing road conditions. Regular maintenance can help avoid the risk of losing control at high speeds.
I believe safety should always come first when driving. On highways, the speed limit is commonly 120km/h, but it can drop to 80km/h on urban expressways, especially in construction zones or during bad weather. Some sections of the Autobahn in Germany have no speed limits, but you must consider your vehicle's condition, such as engine power or suspension stability. Driving fast increases fatigue risks and fuel consumption spikes. I often remind myself to check the braking system, as most high-speed accidents are caused by speeding or distractions. Improper speed also shortens tire lifespan, and maintaining 100-110km/h in eco-mode is ideal. A dashcam helps monitor actual speed to avoid tickets. Safe driving is more important than chasing speed.
From a technical perspective, highway speed limits depend on road design. Wired highways typically have a maximum speed of 120km/h, which is set based on safety calculations. Unlimited highways like some in Germany theoretically have no upper limit, but in practice, vehicle performance determines speed. For example, engine overheating or wind resistance can double fuel consumption. I've conducted tests showing that vehicle stability decreases above 130km/h, becoming more dangerous in rainy conditions. Proper vehicle maintenance is crucial - installing new tires can improve traction. It's advisable to avoid constant high-speed acceleration and maintain steady speeds to prolong engine lifespan.
