What is the speed range for first, second, and third gears?

[Kendall]

First gear is the starting speed, typically ranging from 0-5 km/h. Second gear corresponds to a speed range of 5-20 km/h. Third gear corresponds to a speed range of 20-40 km/h. Additional information is as follows: 1. Timing for upshifting: When the engine has sufficient power, it emits a dull "humming" sound. If after upshifting there is no power deficiency or shaking of the transmission mechanism, and the vehicle speed increases rapidly with smooth and natural driving, it indicates accurate timing for upshifting. 2. Timing for downshifting: When the vehicle speed and engine RPM continue to drop, and you feel the car losing power with engine compartment vibration, it's time to downshift one gear. Downshifting too early will cause noticeable jerking, wasting engine power, increasing fuel consumption, and affecting the lifespan of the engine and transmission. Downshifting too late will result in continued power deficiency even after downshifting, and further downshifting will still feel jerky. Misjudging the shifting timing can lead to such "irreversible" consequences, which will inevitably affect the driving experience.