49 C.F.R. § 392.62 Safe operation, buses.
Title 49 - Transportation
No person shall drive a bus and a motor carrier shall not require or permit a person to drive a bus unless— (a) All standees on the bus are rearward of the standee line or other means prescribed in §393.90 of this subchapter; (b) All aisle seats in the bus conform to the requirements of §393.91 of this subchapter; and (c) Baggage or freight on the bus is stowed and secured in a manner which assures— (1) Unrestricted freedom of movement to the driver and his proper operation of the bus; (2) Unobstructed access to all exits by any occupant of the bus; and (3) Protection of occupants of the bus against injury resulting from the falling or displacement of articles transported in the bus. [63 FR 33278, June 18, 1998]
Title 49: Transportation
PART 392—DRIVING OF COMMERCIAL MOTOR VEHICLES
Subpart G—Prohibited Practices
§ 392.62 Safe operation, buses.

