What are the speed limits for four lanes in the same direction on a highway?

[LeEmery]

On highways with four lanes in the same direction, the speed limits are as follows: the first lane is 110-120 km/h, the second lane is 90-110 km/h, and the third and fourth lanes must not be below 60 km/h. Overview of vehicle speed: Vehicle speed refers to the distance a vehicle travels per unit of time, commonly measured in kilometers per hour (km/h) or meters per second (m/s). Vehicle speed is one of the three key parameters in traffic flow theory and plays a significant role in traffic flow studies. Classification of vehicle speed: Vehicle speed can also generally refer to motor vehicle speed. Depending on different applications, vehicle speed is mainly categorized into spot speed, running speed, and design speed. Spot speed is the instantaneous speed of a vehicle passing a specific point on the road. Design speed is the speed established to determine the design parameters of various geometric elements of a road and ensure their coordination.