No, the manual transmission test is for the C1 driver's license, while the automatic transmission test is for the C2 driver's license. If you want to switch, the previous results of Subject 1 will be invalidated, and you will have to retake the test, which is simply not worth it. A manual transmission, also known as a manual gearbox (MT), requires the driver to manually shift gears by moving the gear lever to change the gear engagement inside the transmission, thereby altering the gear ratio to achieve speed changes. Working principles of manual and automatic transmissions: 1. The impeller and turbine form a working pair: They function like two fans placed opposite each other, where the wind from one fan drives the rotation of the other fan's blades, with the wind acting as the medium for kinetic energy transfer. If a liquid is used instead of air as the medium for kinetic energy transfer, the impeller will drive the turbine to rotate via the liquid. By adding a guide wheel between the impeller and turbine, a speed difference between them can be achieved through reaction force, enabling variable speed and torque. 2. Insufficient torque range: Due to the limited torque range of the hydraulic torque converter in automatic transmissions, several rows of planetary gears are connected in series behind the turbine to improve efficiency. The hydraulic control system automatically operates the planetary gears according to changes in engine operation, thereby achieving automatic speed and torque variation. The auxiliary mechanism for automatic gear shifting cannot meet all driving needs, such as parking or reversing, so intervention devices and manual levers are also included, marked with P (Park), R (Reverse), N (Neutral), and D (Drive). Additionally, within the Drive gear, there are "2" and "1" sub-gears for starting or climbing slopes.
