Cross over mirrors, installed in front of the cab of a truck, are a simple way of eliminating a truck driver’s front “blind spot” and allowing the driver to see any person at least three feet tall and passing one foot in front of the vehicle.Click to see full answer. Keeping this in consideration, what is a crossover mirror on a school bus?5 – Outside Cross View Mirror. These mirrors are mounted on one or both front corners of the bus. They are used to see the “danger zone” directly in front of the bus that is not visible by direct vision, and to view the “danger zone” to the side including the service door and the front wheel area.Likewise, how many mirrors are on a school bus? 5) There are two side-mounted flat mirrors, one on the right side of the bus and one on the drivers side. They are used to monitor traffic, check clearances and identify students on the sides and to the rear of the bus. One may also ask, what do outside crossover mirrors allow a driver to see? Crossover mirrors are used to help a school bus driver see the danger zone area directly in front of the bus, as well as the danger zone areas to the left and right sides of the bus, including the area from the front of the bus to the service door.How do you adjust a bus mirror?Make sure the mirrors are properly adjusted so that you can see: The entire area in front of the bus from the front bumper at ground level to a point where direct vision is possible. Direct vision and mirror view vision should overlap. The front tire(s) touching the ground.