What is the definition of reaction distance while driving?

Reaction distance refers to the distance a vehicle travels from the moment a driver perceives a potential hazard until the driver is able to physically respond, typically by applying the brakes. This distance is crucial because it encompasses the time it takes for the brain to recognize a danger and the muscle response to start braking. Understanding reaction distance helps drivers maintain a safe following distance and improves their ability to respond quickly to sudden changes in traffic conditions.

Option B accurately captures this concept as it highlights the critical moment from when a driver senses danger to the actual moment they initiate braking. This understanding is essential for safe driving practices, as it emphasizes the importance of being aware of one’s surroundings and being prepared to react appropriately in emergency situations.