The behavior you described is often referred to as "speed matching" or "velocity anchoring." There could be several reasons why some drivers feel the need to match their speed to the car in front of them, even if it's going slower than they would prefer:
Safety: Some drivers may feel more comfortable traveling at the same speed as the car in front of them, especially in heavy traffic or adverse weather conditions. They might think that maintaining a constant speed reduces the chances of collisions or accidents.
Social Influence: Humans are social beings, and this behavior can be influenced by the "herd mentality." When they see other cars maintaining a specific speed, they might unconsciously feel inclined to do the same.
Lack of Confidence: Some drivers might lack confidence in their own judgment and prefer to follow others rather than make their own decisions about speed.
Fear of Overtaking: Overtaking another vehicle requires skill and can be risky, especially if the driver is not confident in their ability to pass safely.
Avoiding Conflict: Some drivers might not want to upset or annoy the driver in front by trying to overtake, so they choose to match their speed instead.
Conservation of Fuel: In certain situations, drivers might try to match the speed of the vehicle in front to conserve fuel, as it can be more fuel-efficient than rapid acceleration and deceleration.
Not Paying Attention: In some cases, drivers might not be fully aware of their speed and inadvertently match the speed of the car in front due to inattentiveness.
Traffic Flow: In heavy traffic, matching the speed of the car in front can help maintain a smoother flow and prevent unnecessary braking and acceleration.
It's essential for drivers to be aware of their own driving habits and the reasons behind them. While matching the speed of the car in front can be a reasonable approach in certain situations, it's crucial to prioritize safety and drive at a speed that is appropriate for the road conditions and your comfort level. Always maintain a safe following distance and be prepared to adjust your speed as needed.