A passenger seat rocks because its mounting is loose. What does this mean for the inspection?
Correct answer: The seat is not securely fastened and the defect needs correction
Passenger seats must be safe and securely fastened. A padded seat is not safe merely because its cushion looks sound.
Source: Washington Commercial Driver Guide, N/10/20; section 4.1.3, physical PDF 75, printed 4-1. ↗
Which loading arrangement is acceptable for carry-ons and freight?
Correct answer: One that keeps emergency exits usable and protects riders from shifting items
Secure baggage against falling or shifting while keeping emergency doors and windows accessible.
Source: Washington Commercial Driver Guide, N/10/20; section 4.2, physical PDF 76, printed 4-2. ↗
The bus has a passenger restroom with an emergency buzzer. What belongs in the interior inspection?
Correct answer: Checking that the restroom emergency buzzer works
The guide includes signaling devices and, when fitted, the restroom emergency buzzer in the passenger-area inspection.
Source: Washington Commercial Driver Guide, N/10/20; section 4.1.3, physical PDF 75, printed 4-1. ↗
What should be true of a bus emergency door's identification and fitted red door light?
Correct answer: The exit sign is visible and the red light works for use with outside lights
The emergency-exit sign must be visible. If the described red emergency-door light is fitted, the guide calls for it to work and be on at night or when outside lights are used.
Source: Washington Commercial Driver Guide, N/10/20; section 4.1.3, physical PDF 75, printed 4-1. ↗
Before beginning a bus trip, how should you use the driver's seat belt?
Correct answer: Fasten it before driving, including on a short trip
The guide directs the driver to use the seat belt. A short route does not remove the need for that protection.
Source: Washington Commercial Driver Guide, N/10/20; section 4.1.5, physical PDF 75, printed 4-1. ↗
On a bus designed for standing riders, where must those riders remain relative to the standee line?
Correct answer: Behind the line marking the forward limit for standing passengers
The line or other marker keeps standing riders out of the area forward of the rear of the driver's seat.
Source: Washington Commercial Driver Guide, N/10/20; section 4.2.3, physical PDF 76, printed 4-2. ↗
The aisle is lower than the passenger seats. When is it best to remind riders about the step down at a stop?
Correct answer: Before the bus comes to a complete stop and riders start leaving
Warn riders about the change in floor level before they begin moving to get off.
Source: Washington Commercial Driver Guide, N/10/20; section 4.2.4, physical PDF 76, printed 4-2. ↗
When should a charter driver explain applicable passenger comfort and conduct rules?
Correct answer: At the start of the trip
Explaining the carrier's rules early helps avoid problems later. Do not wait for conflict to develop while driving.
Source: Washington Commercial Driver Guide, N/10/20; section 4.3.1, physical PDF 76, printed 4-2. ↗
Passengers have just boarded a transit bus that permits standing. When should you start moving?
Correct answer: After they have sat down or braced themselves
Wait until riders are positioned safely. Starting while they are still unprepared increases the risk of a fall.
Source: Washington Commercial Driver Guide, N/10/20; section 4.3.2, physical PDF 77, printed 4-3. ↗
A disruptive rider must leave the bus. What must you consider when choosing the place?
Correct answer: The rider's safety as well as the safety of the other passengers
Follow the carrier's procedures and do not discharge a person where it would be unsafe. A suitable scheduled or well-lit populated stop may be safer.
Source: Washington Commercial Driver Guide, N/10/20; section 4.3.2, physical PDF 77, printed 4-3. ↗
While positioning a bus at a stop, what clearance deserves particular attention?
Correct answer: Mirrors and the bus body near passing traffic, poles and tree limbs
The bus and its mirrors need enough space beside traffic and fixed objects when arriving at or leaving a stop.
Source: Washington Commercial Driver Guide, N/10/20; section 4.3.3, physical PDF 77, printed 4-3. ↗
One train has cleared a crossing with several tracks. What should you check before proceeding with a bus?
Correct answer: That no other train is approaching on another track and the crossing is safe
A departing train can hide another train. Recheck all tracks and signals before moving.
Source: Washington Commercial Driver Guide, N/10/20; section 4.3.5, physical PDF 77, printed 4-3. ↗
A commercial bus carrying passengers approaches a Washington railroad grade crossing with no stop line and no applicable exemption. Where must it stop?
Correct answer: At least 15 feet and no more than 50 feet from the nearest rail
When no stop line is present, the required stopping interval is 15 to 50 feet from the nearest rail. Look and listen before proceeding safely.
Source: RCW 46.61.350(1)(a); current text reviewed September 13, 2026. ↗
A bus approaches a drawbridge with no signal light and no traffic-control attendant. What does the guide require?
Correct answer: Stop at least 50 feet before the draw and check that it is completely closed
At an unguarded drawbridge, stop before the draw and confirm it is closed before crossing.
Source: Washington Commercial Driver Guide, N/10/20; section 4.3.6, physical PDF 77, printed 4-3. ↗
Why inspect passenger-area safety equipment at the end of a bus shift?
Correct answer: Riders may have damaged it, and reporting problems allows repairs before reuse
Check such items as handholds, seats, windows and emergency exits. The next driver should not inherit an unreported safety problem.
Source: Washington Commercial Driver Guide, N/10/20; section 4.4, physical PDF 77, printed 4-3. ↗
May a bus be refueled inside a closed building while riders remain on board?
Correct answer: No; the guide prohibits refueling in that situation
Avoid refueling with riders aboard unless absolutely necessary, and never do so in a closed building.
Source: Washington Commercial Driver Guide, N/10/20; section 4.5, physical PDF 77, printed 4-3. ↗
A passenger starts a conversation that requires you to turn away from the road. What should you do while driving?
Correct answer: Keep attention on driving and defer the distracting conversation
Do not engage in distracting conversations or other distracting activities while driving the bus.
Source: Washington Commercial Driver Guide, N/10/20; section 4.5, physical PDF 77, printed 4-3. ↗
A covered carrier's bus has a reported defect likely to affect safe operation. What must happen before it is used again?
Correct answer: Repair the safety-affecting defect and provide the required repair certification
The carrier must repair safety-affecting defects before operation and certify the listed defects as repaired or repair unnecessary where that determination properly applies.
Source: 49 CFR 396.11(a)(3)(i)–(ii); current text reviewed September 13, 2026. ↗
For a bus operation covered by the federal DVIR requirements, the driver discovers a steering defect during the day. What belongs in the end-of-day report?
Correct answer: Identification of the bus, the safety-affecting defect and the driver's signature
A discovered or reported defect affecting safety or risking mechanical breakdown belongs in the signed vehicle report.
Source: 49 CFR 396.11(a)(1), (a)(2)(i)–(ii); current text reviewed September 13, 2026. ↗
On the transit system described in the guide, what does opening the rear door make the brake-and-accelerator interlock do?
Correct answer: Apply the brakes and hold the throttle at idle
The described interlock holds the bus through its brakes and idle throttle while the door is open. Closing the door releases it, so it is not a parking-brake replacement.
Source: Washington Commercial Driver Guide, N/10/20; section 4.6, physical PDF 78, printed 4-4. ↗
