Hillsborough County students return to classes a week from Tuesday, and the sheriff's office wants driver to know when they must legally stop for a school bus.

The agency has launched a public awareness campaign called Got Brakes? It answers questions such as, do you have to stop if a bus is stopped on the other side of a divided highway?

The information posted includes a video and a summary of Florida's school bus stop regulations.

According to a Florida Department of Education survey conducted in 2012, more than 21,000 drivers illegally passed school buses in just a single day.

That represents over 3.7 million possible violations by motorists in Florida during the 180-day school year. Each illegal pass-by could result in a tragic injury or fatality of a student, the sheriff's office said.

For even more information on Florida's school bus laws, visit http://floridaschoolbussafety.gov.