Is it necessary to shift to neutral when waiting at a red light with an automatic transmission?
2 Answers
If the vehicle has an automatic hold function, it is not necessary to shift to neutral when waiting at a red light with an automatic transmission. Here are the specific steps for using the automatic hold function: 1. After activating the automatic hold function, you do not need to engage the handbrake when waiting at a red light. 2. Once the vehicle comes to a complete stop, there is no need to shift from D (Drive) to N (Neutral) or switch between D and P (Park). The system will determine that braking is required at this moment, and the onboard computer will send a signal to command the braking system to apply the appropriate braking force, keeping the vehicle in a braked state. 3. Whether in D or N gear, there is no need to keep the foot on the brake pedal continuously, as the car will remain stationary. 4. When the vehicle starts moving again, the system will detect the throttle input and engine traction to determine that the vehicle is about to move, and the braking force will be automatically released.
In my own driving experience, if the red light is short, lasting only about ten seconds, I usually stay in D gear and simply press the brake to save trouble. However, for those particularly long red lights, especially during rush hour when waiting for several minutes, I shift to neutral. This has many benefits: first, it allows my legs to relax without constant tension; second, the transmission won’t continuously heat up as it does in D gear while braking, reducing wear on internal components. Especially in urban traffic jams, frequent starts and stops can overwork the torque converter, which may lead to long-term issues. Shifting to neutral also prevents accidents, such as the car lurching forward if the brake is accidentally released. Although modern cars are designed intelligently and can handle waiting at red lights in D gear, for safety and the longevity of the vehicle, I recommend making it a habit, especially for beginners or those driving older cars. Remember to combine it with the handbrake for extra stability, ensuring the car stays firmly in place.
