It simulates you in the driver's seat of a car. You're driving down a road, when you see a big red hand flash in front of you. You have to put on the brakes. Then, the Reaction Time Test tells you how old you are, when it comes to driving.

The test is based on reaction times of 2,000 people ages 18 and over. The Reaction Time Test plotted their reaction times by age; it matches your reaction time to those averages.

Some of their results may surprise you. The Reaction Time Test found that left-hand people and men have slightly better reaction times than the average person.

https://www.justpark.com/creative/reaction-time-test/