What is PRT?
Posted: Wed Jul 12, 2023 2:07 pm
Saw a post on Linkedin by Jeff Muttart of Driver Research Institute in which he posted:
which starts...
- "Swaroop wrote a simple, short explanation to define perception-response time, and to explain how to evaluate it in an objective way. Take a look, it is worth 5 minutes of your time if evaluating drivers'' response times."
which starts...
- PRT is Perception Response Time. While often confused with reaction time, PRT is the time from when drivers recognize a hazardous scenario to when drivers start to respond in an evasive manner. PRT itself has comprised of different components as shown in the figure below. A prerequisite for us to measure PRT is the presence of a hazardous scenario. If drivers are not facing an emergency event, drivers do not respond. Every crash type has a different event onset from where response times were measured. E.g., if we have a nighttime crash, when did the driver recognize the dark clad pedestrian in the road? If you have a stopped vehicle, when was the looming threshold reached? Next we must know what component of a drivers response we are trying to measure. The article below is a brief description of what to keep in mind when talking about driver responses.