According to the law, how frequently should the brakes of a public vehicle be checked?

1. Correct answer: At least once every six months, in a licensed garage.
2. At least once every 12 months, in a licensed garage.
3. At least once a year during the summer, in a licensed garage.
4. At least once a year during the winter, in a licensed garage.

WhyA public vehicle's brakes are checked at a licensed garage at least once every six months. Once a year is too rarely, and the season has nothing to do with it.