
Automatic transmission drive is represented by the letter D. An automatic transmission vehicle refers to a car where the driver does not need to manually shift gears. The vehicle will automatically select the appropriate gear based on driving speed and traffic conditions. The gears in an automatic transmission include: 1. P (Parking gear, starting gear); 2. R (Reverse gear); 3. N (Neutral gear); 4. D (Drive gear); 5. L (Low gear); 6. S (Sport mode). Precautions for shifting gears in an automatic transmission vehicle: 1. Do not press the accelerator pedal when shifting gears; 2. Do not immediately press the accelerator pedal hard after engaging a gear; 3. The vehicle can only be started in P or N gear; 4. Removing the gear lever from P requires pressing the brake; 5. Do not shift into N gear while driving to coast; 6. Do not push into P gear while the vehicle is moving; 7. When changing driving directions, switching between D and R gears should only be done after the vehicle has come to a complete stop; 8. Placing the gear in N while driving prevents the oil pump from supplying oil normally for lubrication, which can cause the temperature of internal transmission components to rise and result in damage.

I've been driving automatic transmission cars for over a decade. The drive gear is that prominent big letter D, very eye-catching. Every time I start, I press the brake, shift from P through R directly to D, release the brake and the car moves forward. However, some friends might not have noticed that automatics actually have low-speed gears like L or M, which are particularly useful when climbing hills. D stands for Drive mode, where the transmission automatically shifts gears based on speed, eliminating the need to worry about clutch and gear coordination like in manual transmissions. Using D gear is most worry-free for long drives - just control the accelerator and brake with your right foot. It's also great for commuting as there's no frequent gear shifting in traffic jams. A little tip: if your car suddenly loses power, remember to check if the gearshift lever was accidentally bumped out of D position.

When teaching driving, I always remind students to remember the meanings of the automatic transmission letters: R stands for Reverse, N is Neutral, P is Park, and D is for Drive. This D represents Drive, and after shifting into it, releasing the brake will allow the car to start smoothly. Another advantage of using D gear is that it won't stall as easily as a manual transmission, making it much less stressful for beginners. However, it's important to note that you shouldn't keep the brake pedal pressed for long periods at a red light while in D gear, as this can easily raise the transmission oil temperature. If you feel a lack of power when climbing a steep slope, you can use the paddle shifters or switch to S gear to increase torque. For daily city commuting, D gear alone can cover 90% of the scenarios, and I recommend drivers practice shifting a few more times in the underground garage of their residential area to get a better feel for it.

When I bought my car, I specifically asked the salesperson how to use the automatic transmission. It turns out the forward gear is marked with a D. Every time I start the car, I first press the brake, hold the button, and shift the gear lever from P to D. The dashboard will display D1 for starting. Nowadays, new cars even have electronic rotary gear selectors, but the markings are always very prominent. Once, my cousin got stuck in the N gear for a long time without moving—it was simply because he didn’t push it to the D position. I recommend new car owners practice shifting a few times while paying attention to the gear markings. Remember, pulling left and back is reverse gear, and the next position down is the forward gear. For daily use, the D gear is completely sufficient, as the transmission shifts automatically and smoothly. If you encounter a long downhill slope, you can switch to manual mode to assist with braking.


