Texas Drivers Ed Written Practice Test

At what speed does the reaction distance measure 44 feet?

1. 10 MPH

2. 20 MPH

3. 30 MPH

4. 40 MPH

The correct answer is: 20 MPH

The correct choice indicates that at a speed of 20 MPH, the reaction distance measures 44 feet. This is based on the understanding of how speed affects reaction distance. Reaction distance refers to the distance a vehicle travels during the driver’s reaction time, which is typically around 1.5 seconds for a driver to perceive and respond to a situation. When calculating reaction distance, it's important to remember that the distance traveled in that time frame increases with speed. At 20 MPH, which translates to approximately 29.33 feet per second, the vehicle would cover about 44 feet in around 1.5 seconds, aligning perfectly with the given measurement. Other speeds would either yield a shorter or longer reaction distance not matching the specified distance of 44 feet. This relationship between speed and distance is crucial for understanding how quickly a vehicle can react to potential hazards on the road.