What is the usual speed limit on urban roads when there is no speed limit sign?

[LeElla]

Under normal circumstances, the speed limit on urban roads without speed limit signs is 50 kilometers per hour. The following is a detailed introduction to the specific requirements for different situations when there is no speed limit sign: 1. Roads without a centerline: When on roads without a centerline, the maximum speed is 30 kilometers per hour, and on highways, it is 40 kilometers per hour. 2. Roads with only one motor vehicle lane in the same direction: When on roads with only one motor vehicle lane in the same direction, the maximum speed is 50 kilometers per hour, and on highways, it is 70 kilometers per hour. 3. Roads with two or more motor vehicle lanes in the same direction: When on roads with two or more motor vehicle lanes in the same direction, the maximum speed is 60 kilometers per hour, and on closed motor vehicle-only roads and highways, it is 80 kilometers per hour.