The maximum speed of a school bus is typically around 55 miles per hour (88.5 kilometers per hour) on highways, though this can vary depending on state regulations and local laws. Many school districts impose lower speed limits for safety reasons, especially in residential areas and during school zones, where speeds may be reduced to 15-25 miles per hour. Additionally, school buses are designed to prioritize safety over speed, often equipped with features that enhance their ability to navigate safely in various conditions.
55 mph
Speed is always a factor, whether you are stopping for a school bus or not.
nope
42.4mph
It depends on where the bus is. Near a school, it's usually about 20 - 30 mph.
600
$1,000
When the school speed limit sign shows 20 mph flashing, the maximum speed limit is 20 miles per hour.
55 MPH Source: http://www.hldi.org/externaldata/srdata/docs/sr1013.pdf
Typically, it'll be whatever the speed limit of that road is. If there are specific laws on the subject, it'll be a matter of state law, not the FMCSR. You'd need to specify a state for a more accurate answer.
80 km per hour
Where? Be more specific!