Which gear should be used for normal driving in an automatic transmission car?

[CodyMarie]

Automatic transmission cars use the D (Drive) gear for normal driving. The automatic transmission does not require the driver to manually shift gears; the vehicle will automatically select the appropriate gear based on the driving speed and traffic conditions. The letters on the automatic transmission represent the following: 1. P is the Parking gear and Start gear; 2. R is the Reverse gear; 3. N is the Neutral gear; 4. D is the Drive gear, also known as the Forward gear; 5. L is the Low gear; 6. S is the Sport mode; 7. OD is the Overdrive gear. The correct way to start an automatic transmission car is: 1. Move the gear selector to the intended driving position before pressing the accelerator pedal; 2. Do not press the accelerator pedal abruptly; instead, press it slowly to gradually accelerate.

[LeviMarie]

After driving for over a decade, I've found that using D (Drive) mode in automatic transmissions is the most worry-free option for normal driving. The car automatically shifts gears based on speed, eliminating any need to worry about shift timing. D mode is particularly friendly during urban commuting and traffic jams – just release the brake and the car creeps forward slowly. Highway cruising is even more effortless; keeping D mode maintains steady speed with stable engine RPM. Some friends ask whether they should switch to S (Sport) or L (Low) modes – it's really unnecessary for daily use unless climbing steep hills or needing engine braking on long descents. Just remember to use P (Park) when stopping and R (Reverse) for backing up – leave everything else to D mode, which engineers specifically designed for everyday driving.

[OVincent]

As someone who values driving convenience, I particularly appreciate the D (Drive) gear design in automatic transmissions. During normal driving, simply shifting into Drive mode allows the vehicle to automatically handle gear changes, completely freeing up the left foot and right hand. On regular roads, Drive mode offers the most economical and smooth operation, with the transmission selecting optimal gears. It's important to note that after starting, you must pass through R (Reverse) and N (Neutral) gears before reaching D gear, and never engage P (Park) while driving. In rainy or snowy conditions with slippery roads, Drive mode's smooth performance makes speed control easier. The only situation requiring a shift is during continuous downhill mountain driving, where temporarily switching to lower gears can utilize engine braking.

[DakotaRose]

From a mechanical perspective, it is most reasonable to use the D (Drive) gear for normal automatic transmission operation. In this mode, the transmission control module automatically shifts gears up or down based on vehicle speed, throttle position, and load. When sensors detect increased wheel speed, the hydraulic system engages the planetary gear set for upshifts; it automatically downshifts during deceleration. For daily driving, keeping the transmission in D gear is sufficient, as the transmission oil pump maintains adequate pressure for smooth clutch engagement. Other gears should only be considered for specific conditions - for instance, using S (Sport) mode on racetracks to delay shifts and increase RPM, or L (Low) gear on muddy surfaces to limit gear range and prevent wheel slip.