 That those things make America great, we need to talk. Weekdays at 3 on Seville, 107.5 and 1260 WCHV. I'm Sergeant Dotz with the Albemarle County Police Department's Traffic Unit. What do you know about perception response time? Essentially, it's your reaction time. It's how long it takes for a deer, ball, dog, or pedestrian to enter your view while driving and you hit the brakes.