Does federal law require school buses to be yellow?
NHTSA: No. Federal law applies only to safety performance standards, and not to design standards or appearance. However, NHTSA provides recommendations for the States on various operational aspects of school bus and pupil transportation safety programs, in the form of Highway Safety Program Guideline No. 17, Pupil Transportation Safety. Among other matters, Guideline 17 recommends that school buses be yellow.
