What does the speed limit of 30, 40, 50, 70 mean?

[JourneyRose]

According to Article 45 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China": On roads without a central dividing line, the speed limit for urban roads is 30 kilometers per hour, and for highways, it is 40 kilometers per hour; on roads with only one motor vehicle lane in the same direction, the speed limit for urban roads is 50 kilometers per hour, and for highways, it is 70 kilometers per hour. The image shows a highway without a central dividing line, so the maximum speed limit is 40 kilometers per hour. Additional Information: Article 46: When a motor vehicle encounters any of the following situations, the maximum speed shall not exceed 30 kilometers per hour, and for tractors, battery-powered vehicles, and wheeled special-purpose motor vehicles, the speed shall not exceed 15 kilometers per hour: When entering or exiting a non-motorized vehicle lane, passing through a railway crossing, sharp curves, narrow roads, or narrow bridges; when making a U-turn, turning, or descending a steep slope; when encountering fog, rain, snow, dust, or hail with visibility less than 50 meters; when driving on icy, snowy, or muddy roads; when towing a malfunctioning motor vehicle.

[OCayden]

I've been driving for many years, and on the road, I often see speed limit signs with numbers like 30, 40, 50, and 70, which usually represent the speed restrictions for different road sections. The 30 km/h limit is commonly used in dense urban areas where pedestrians and children are present, requiring slower driving to prevent accidents. The 40 km/h limit is typically for town traffic zones, where you need to be cautious of merging traffic. The 50 km/h limit suits suburban areas or straight roads, balancing time and safety. The 70 km/h limit is seen on national highways or highway entrances, offering higher efficiency but don’t speed recklessly. These numbers aren’t arbitrary; they are backed by traffic regulations. Ignoring them could lead to fines or accidents. I remember once rushing and exceeding the speed limit by 50%, nearly hitting a cyclist. Now, I use a navigation app to remind me of speed limits, developing good habits that save both worry and money—safety always comes first. Controlling your speed also saves fuel and extends your car’s lifespan, a win-win situation.

[RosalieAnn]

As a car owner, my new vehicle has a feature that sets speed reminder points, such as 30, 40, 50, and 70, which likely refer to the transition intervals of the intelligent driving system. Below 50, it automatically switches to fuel-saving mode to optimize fuel efficiency. Above 70, it activates a sportier engine response. I find these settings quite useful for daily driving on provincial roads. Speed management isn't just about compliance; it also helps reduce sudden braking and acceleration. Installing a small software is simple and cost-effective. My friend also added a similar feature to his modified car to avoid speeding tickets. Mastering these speed ranges makes driving smoother and more comfortable. Don't just focus on the numbers; adjust your speed based on weather and road conditions while driving. Safe travel is the top priority.

[DonovanFitz]

The speed figures 30, 40, 50, and 70 seem like key points in automotive performance testing, which I focused on during the test drive. The acceleration time from 0 to 50 km/h affects the starting experience; maintaining 50 km/h tests fuel economy; speeds above 70 km/h challenge high-speed handling and noise control. Before choosing a car, it's essential to drive through these speed ranges. Higher speeds may feel better but aren't safe, so slowing down appropriately protects both yourself and others.