After baggage loading and restroom service, what should the driver check before pulling away?
Correct answer: That the baggage and other exterior access panels are closed.
The exterior check includes emergency exits and service access panels. Close the appropriate panels before driving rather than leaving them open after servicing.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 4 (July 2017), 4.1.2 Access Doors and Panels; physical PDF page 65 (printed 4-1); reviewed September 15, 2026. ↗
A bus has a roof hatch designed to lock partly open for ventilation, and its use is permitted. What extra clearance issue must the driver consider?
Correct answer: The open hatch increases the bus's required overhead clearance.
A raised hatch increases height. Follow the vehicle's instructions, account for that clearance and do not treat open hatches as a routine practice.
Source: Missouri Commercial Driver License Manual, revised August 2025; Section 4 (July 2017), 4.1.4 Roof Hatches; physical PDF page 65 (printed 4-1); reviewed September 15, 2026. ↗
A standing passenger moves forward of the bus's standee line before departure. What must happen before the driver proceeds?
Correct answer: The standing passenger must move rearward of the line.
Under the federal bus-operation rule, standees must be behind the prescribed standee line or equivalent barrier.
Source: 49 CFR 392.62(a); eCFR displayed current through September 11, 2026; reviewed September 15, 2026. ↗
A bus designed for standing riders uses a painted floor line, not another permitted indicator, to mark the prohibited front area. What is the minimum line width?
Correct answer: 2 inches, in a contrasting color.
The federal marking rule specifies a contrasting line at least 2 inches wide, or another means indicating the prohibited area. This concerns the driver's level, subject to the rule's exceptions.
Source: 49 CFR 393.90; standee line requirement; Official eCFR XML dated September 11, 2026 was checked against the linked rule; reviewed September 15, 2026. ↗
A permanent passenger seat is ahead of the standee boundary but is positioned so its seated occupant cannot interfere with safe bus operation. Does the standee rule itself prohibit that seat?
Correct answer: No; the rule distinguishes qualifying permanent seats from standees.
The rule does not prohibit permanent seats in that area when seated occupants will not interfere with safe operation. This is not permission for standing passengers or unsecured chairs.
Source: 49 CFR 393.90; permanent-seat exception; Official eCFR XML dated September 11, 2026 was checked against the linked rule; reviewed September 15, 2026. ↗
A bus has an aisle seat. Under the federal equipment rule, what must that seat do when unoccupied?
Correct answer: Automatically fold so the aisle is clear.
An aisle seat is permitted only when designed and installed to fold automatically and leave a clear aisle when unoccupied.
Source: 49 CFR 393.91; aisle-seat design requirement; Official eCFR XML dated September 11, 2026 was checked against the linked rule; reviewed September 15, 2026. ↗
A passenger seat is not securely fastened to the bus. Can the driver operate the bus by putting a sign on that seat?
Correct answer: No; the bus must not operate with an unsecured seat.
A warning does not secure a loose seat. The rule prohibits bus operation when any seat is not securely fastened.
Source: 49 CFR 393.91; secure fastening requirement; Official eCFR XML dated September 11, 2026 was checked against the linked rule; reviewed September 15, 2026. ↗
The main bus aisle is clear, but luggage blocks access to an emergency exit window. Is the loading acceptable?
Correct answer: No; every occupant must have unobstructed access to all exits.
Keeping the main aisle clear is not enough. Stowed articles must not obstruct occupants' access to any exit.
Source: 49 CFR 392.62(c)(2); eCFR displayed current through September 11, 2026; reviewed September 15, 2026. ↗
A case beside the bus driver's seat limits arm movement during steering. What should happen before departure?
Correct answer: Restow it so the driver can move and operate the bus freely.
Baggage must be positioned as well as secured so it does not restrict driver movement or proper operation. Tightening an obstruction in place does not solve the problem.
Source: 49 CFR 392.62(c)(1); eCFR displayed current through September 11, 2026; reviewed September 15, 2026. ↗
An overhead item could fall onto riders during a sudden stop even though it does not block an exit. What is needed?
Correct answer: Stow and secure it to protect occupants from falling or shifting.
Bus loading must also protect occupants from falling or displaced articles. Clear exits alone do not make an unsecured overhead load safe.
Source: 49 CFR 392.62(c)(3); eCFR displayed current through September 11, 2026; reviewed September 15, 2026. ↗
