Car park website JustPark surveyed 2,000 people over the age of 18 to find how good their emergency stops are, and have made a driving mini-game which guesses how old you are based on your reaction time.
You simply have to click or tap a key when you see the stop sign.
The game then predicts your age, comparing your reaction time with that of the results of the survey.
Try it out and let us know how you do in the comments, below:
The survey showed that people who had slept eight hours the night before had the fastest reaction times, up to 20 per cent faster than others, and regular drivers were 10 per cent faster.
People who had been driving between one and two years also had faster reaction times, whereas people who had four hours of sleep or less last night, were slower.
FYI, in our office, people scored 42, 42, 22, 26 and (non-humblebrag incoming) this reporter was greeted with this screen: