All school buses operated in Ohio must meet federal standards and Ohio's state construction standards. The state standards are managed by the Ohio State Highway Patrol (OSHP) on behalf of the Ohio Department of Public Safety. School buses must comply with the standards that are in effect as of the date of manufacture. Since standards are updated periodically, schools should keep outdated copies of standards as reference for older buses. The most recent set of standards were adopted on January 1, 2019, and apply to any school bus built and sold in Ohio on or after that date.  

Current Ohio School Bus Standards and Inspection Manual

Older versions of Ohio's standards are provided here for use with older buses:

Optional school bus equipment
In addition to the equipment required in the construction standards, owners may purchase optional equipment, providing that it has been approved by the Ohio Department of Public Safety through the OSHP Office of Licensing and Commercial Standards. That office maintains and publishes a list of approved optional equipment currently approved for use on Ohio school buses. Schools or vendors wishing to seek approval for a new option must contact the OSHP for approval prior to installation. Instructions for equipment tests are included in the construction standards, available above.

For current questions of options

Ohio State Highway Patrol School Bus Inspection Manual
The document below is the reference manual used by OSHP motor vehicle inspection teams when evaluating school buses. The final authority for school bus construction is the law that is adopted in the applicable construction standards. If the inspection manual and construction standards are in conflict, the construction standards are the definitive document.

Federal Motor Vehicle Safety Standards

All school buses sold in the US are required to meet a stringent set of federal motor vehicle safety standards (FMVSS) in force at the time of manufacture.  These standards are regularly reviewed and updated by the National Highway Traffic and Safety Administration, in conjunction with industry representatives from both manufacturing and the school transportation providers.

The total documentation involved in the FMVSS standards is lengthy.  Provided here is a condensed mini-guide to the standards to provide the reader with an overview of the depth and range of coverage.

Mini-guide to the school bus FMVSS standards