Take China Bus Subject 4 Practice Questions - China Driver License Subject 4 Theory Test - Bus & Large Passenger Vehicle (科目四安全文明驾驶常识 - 客车) Exam

QUESTION 1 / 25

According to Article 51 of the Road Traffic Safety Law of the PRC and safety standards for passenger vehicles (GB 7258-2017), what is the mandatory pre-departure safety duty of a commercial passenger bus driver regarding seatbelts?

Choose one answer below.

AThe driver must remind and ensure that all passengers have fastened their seatbelts before moving the vehicle and maintain reminders throughout the journey✓BThe driver only needs to remind passengers sitting in the front row and seats next to emergency exits to wear seatbelts✓CThe driver is only required to broadcast a seatbelt reminder when entering expressways or mountain roads✓DThe driver does not need to verify seatbelts if the bus is equipped with passenger airbags✓

QUESTION 2 / 25

When pulling a city bus or passenger coach into a designated roadside bus bay (公交港湾), what is the correct civilized driving procedure?

Choose one answer below.

ACut abruptly across the non-motorized lane and brake hard to stop right at the signpost✓BActivate the right turn signal early, yield to cyclists and pedestrians, decelerate smoothly, and align the bus parallel and within 30 cm of the curb✓CStop in the active motorized lane 1.5 meters away from the curb to allow faster departure after passengers board✓DHonk continuously to force pedestrians and bicycles off the bay area before driving into the curb✓

QUESTION 3 / 25

According to Article 62 of the Regulations for the Implementation of the Road Traffic Safety Law of the PRC, which of the following rules strictly applies to passenger vehicle doors during transit?

Choose one answer below.

ADoors may remain slightly ajar on hot summer days if the air conditioning is insufficient✓BVehicles must not be moved or driven if passenger doors are not completely closed (车门未关好不准起步)✓CRear exit doors may be opened in advance while gliding into a bus stop to speed up passenger turnaround✓DThe driver may allow passengers to push open pneumatic doors while slowing down at red traffic lights✓

QUESTION 4 / 25

Why must passenger bus drivers maintain exceptionally smooth acceleration, gear shifting, and progressive deceleration rather than aggressive driving dynamics?

Choose one answer below.

ABuses carry high centers of gravity and unrestrained/standing passengers whose inertia during abrupt braking or swerving causes severe fall injuries✓BAggressive acceleration causes the bus engine transmission to automatically lock into reverse gear✓CSmooth driving is only required when transport management bureau inspectors are physically onboard the coach✓DSudden braking reduces pneumatic air tank pressure to zero within three seconds, permanently disabling the steering wheel✓

QUESTION 5 / 25

Under Ministry of Public Security (MPS) Order No. 162, what is the regulation regarding mobile phone usage by commercial bus drivers while operating a vehicle?

Choose one answer below.

ADrivers may make handheld phone calls if driving at speeds under 30 km/h in urban bus lanes✓BDrivers are strictly prohibited from answering handheld calls, texting, watching video streams, or browsing devices while operating the vehicle✓CDrivers may send voice messages as long as both hands remain placed at the top of the steering wheel✓DHandheld phone calls are permitted as long as the conversation pertains directly to bus route scheduling✓

QUESTION 6 / 25

When assisting elderly passengers, pregnant women, or passengers with limited mobility who are boarding a city bus, what is the driver's proper civilized practice?

Choose one answer below.

AClose the door immediately after the passenger steps on the first step and accelerate to keep on schedule✓BWait patiently until the vulnerable passenger is fully seated or securely holding a safety handrail before closing doors and starting smoothly✓CHonk the horn to urge other seated passengers to leave their seats immediately✓DInstruct the mobility-impaired passenger to board through the rear exit door while the bus is moving✓

QUESTION 7 / 25

Before pulling away from a bus stop, why must a bus driver thoroughly check the right-side external rearview mirror and blind-spot convex mirrors (下视镜/补盲镜)?

Choose one answer below.

ATo check whether any late passengers, children, or non-motorized vehicles are trapped in the blind spot near the front or rear wheels✓BTo inspect whether the vehicle's paint has faded during the stop✓CTo ensure that oncoming vehicles in the opposite traffic lane are yielding✓DTo verify that the bus advertising panels are facing the curb✓

QUESTION 8 / 25

Under Ministry of Public Security and Ministry of Transport commercial driving safety regulations, what are the statutory maximum continuous driving time and mandatory rest requirements for long-distance passenger coach drivers?

Choose one answer below.

AMaximum continuous driving of 4 hours, followed by a mandatory rest of no less than 20 minutes (with long-distance night operations halted or relayed between 02:00 and 05:00)✓BMaximum continuous driving of 8 hours, followed by a mandatory rest of 10 minutes✓CMaximum continuous driving of 6 hours during daytime and 6 hours during nighttime✓DDrivers may drive continuously without rest if they consume caffeinated energy beverages✓

QUESTION 9 / 25

Which of the following items must be verified during a commercial bus driver's daily pre-trip safety inspection (出车前检查)?

Choose one answer below.

ATire pressure and tread condition, service/parking brakes, steering functionality, fire extinguishers, emergency hammers, and clear emergency exit pathways✓BOnly the exterior cleanliness and passenger fare collection box✓COnly the audio system volume and destination digital LED sign✓DThe vehicle fuel level only, leaving all mechanical inspections to the annual inspection station✓

QUESTION 10 / 25

According to Article 78 of the Regulations for the Implementation of the Road Traffic Safety Law of the PRC, what is the maximum statutory speed limit for large passenger buses (大型客车) operating on expressways under normal weather conditions?

Choose one answer below.

A100 km/h (whereas small passenger cars may travel up to 120 km/h)✓B120 km/h (identical to small passenger cars)✓C80 km/h on all expressway lanes✓D130 km/h on three-lane expressways✓

QUESTION 11 / 25

Under GB 7258-2017 and passenger transport operating standards, how must passenger luggage and carry-on items be managed inside a passenger bus?

Choose one answer below.

ALuggage may be stacked in the central aisle as long as passengers can step over it✓BAll large luggage must be stowed in the dedicated lower luggage compartment, and aisles and emergency exits must remain completely clear of obstructions✓CLuggage may be placed in front of emergency exit doors if tied down with bungee cords✓DLuggage may be stacked on empty passenger seats up to the ceiling level✓

QUESTION 12 / 25

Under Article 133-1 of the PRC Criminal Law (Dangerous Driving Crime / 危险驾驶罪), what are the legal consequences for a commercial passenger bus driver who engages in severe overloading (严重超员)?

Choose one answer below.

ACriminal detention (拘役), a concurrent fine, and criminal liability for both the driver and the directly responsible transport management personnel✓BA verbal warning and a 50 RMB administrative fine✓CSuspension of the driver's license for 7 days with no criminal record✓DDeduction of 1 demerit point on the driving license only✓

QUESTION 13 / 25

When driving a large passenger coach into a sharp bend or mountain curve, what is the correct vehicle handling technique to ensure passenger safety?

Choose one answer below.

AAccelerate sharply while entering the curve to counter centrifugal force with momentum✓BDecelerate smoothly before entering the bend ('slow in, smooth out' / 减速慢行), select an appropriate gear, and maintain a steady steering radius without jerky corrections✓CCoast through the curve in neutral (空挡) while applying intermittent handbrake pressure✓DSteer across into the opposing oncoming lane to straighten the curve radius at high speed✓

QUESTION 14 / 25

According to the Road Transport Regulations of the PRC, how should a passenger bus driver handle suspicions that a boarding passenger is carrying flammable, explosive, or hazardous materials?

Choose one answer below.

AIgnore it as long as the passenger promises not to open the package during the journey✓BPolitely request an inspection, strictly refuse carriage of prohibited dangerous goods, and report the matter to station security or the police if the passenger refuses compliance✓CInstruct the passenger to place the flammable items on the rear roof rack✓DCharge an extra freight surcharge and allow the passenger to board✓

QUESTION 15 / 25

When driving a large passenger coach at 100 km/h on a dry, unobstructed expressway, what is the statutory minimum safe following distance from the vehicle ahead?

Choose one answer below.

ANo less than 100 meters✓BNo less than 50 meters✓CNo less than 30 meters✓DNo less than 10 meters✓

QUESTION 16 / 25

Under Ministry of Transport regulations on vehicle dynamic monitoring (道路运输车辆动态监督管理办法), what is the driver's legal obligation regarding the onboard satellite positioning and driver monitoring system (GPS/北斗/DMS)?

Choose one answer below.

AThe driver must ensure the dynamic monitoring device is operating normally throughout the trip and must never block, tamper with, or power off the system✓BThe driver may power off the GPS system during night driving to preserve battery power✓CThe driver may place a sticker over the in-cabin driver-facing camera if feeling uncomfortable✓DDynamic positioning devices are optional and only need to be turned on when entering unfamiliar cities✓

QUESTION 17 / 25

According to Article 47 of the Road Traffic Safety Law of the PRC, when a passenger bus approaches a crosswalk (pedestrian crossing) where pedestrians are crossing, what must the driver do?

Choose one answer below.

AAccelerate and honk to urge pedestrians to clear the crossing quickly✓BStop the vehicle before the stop line and yield right-of-way until pedestrians have passed safely (减速停车，避让行人)✓CManeuver around pedestrians through the opposing lane to maintain bus timetable punctuality✓DFlash high beams continuously and proceed as long as pedestrians are not directly in front of the bumper✓

QUESTION 18 / 25

Why is proper ventilation and fresh air circulation management critical in passenger coach cabins during long-distance trips?

Choose one answer below.

AContinuous air circulation prevents carbon dioxide accumulation, reduces passenger motion sickness, and helps keep the driver alert✓BVentilation is only necessary if the bus is carrying livestock in the passenger compartment✓CFresh air intake causes the bus engine cooling fan to rotate in the wrong direction✓DPassenger bus windows must remain hermetically sealed without any air conditioning operation to save fuel✓

QUESTION 19 / 25

According to Article 46 of the Road Traffic Safety Law of the PRC, how must a commercial passenger bus navigate an uncontrolled railway level crossing (无人看守的铁路道口)?

Choose one answer below.

AAccelerate to cross the tracks as rapidly as possible before any train appears✓BCome to a complete stop before the tracks, look left and right, listen carefully, select a low gear, and cross steadily without shifting gears or stopping on the tracks ('一停、二看、三通过')✓CFollow the preceding vehicle closely bumper-to-bumper across the tracks✓DHonk continuously and coast over the tracks in neutral gear✓

QUESTION 20 / 25

Under Article 48 of the Road Traffic Safety Law Implementation Regulations, what lighting rules must a bus driver follow when meeting an oncoming vehicle at night on an unlit road?

Choose one answer below.

ASwitch from high beams (远光灯) to low beams (近光灯) at least 150 meters away from the oncoming vehicle✓BKeep high beams on continuously to ensure the bus driver maintains maximum forward visibility✓CTurn off all headlights and operate solely on parking lights to avoid dazzling the oncoming driver✓DSwitch to emergency hazard flashers and accelerate past the oncoming vehicle✓

QUESTION 21 / 25

When driving a high-sided passenger bus across a long sea-crossing bridge or through a mountain valley where 'Crosswind' warning signs (横风标志) are posted, what is the proper operational procedure?

Choose one answer below.

AFirmly grip the steering wheel with both hands, decelerate smoothly, anticipate lateral aerodynamic deviation, and gently correct steering toward the upwind side without abrupt jerks✓BAccelerate to maximum speed to cut through the crosswind gust quickly✓CSlam on the brakes immediately upon feeling the vehicle sway laterally✓DSteer sharply toward the bridge guardrail to lean against the wind barrier✓

QUESTION 22 / 25

During heavy rainfall on an expressway, passenger buses face a heightened risk of 'hydroplaning' (水滑现象). What is the primary cause of hydroplaning and how should the driver prevent it?

Choose one answer below.

AWater accumulates between the tire tread and road surface faster than tread grooves can evacuate it, lifting the tire off the pavement; prevented by reducing speed and avoiding worn tires✓BRainwater cools the brake discs below zero degrees Celsius, causing them to freeze instantly; prevented by dragging the brakes continuously✓CRainwater enters the engine air intake manifold, causing sudden acceleration; prevented by shifting into neutral✓DHydroplaning only occurs when tire pressure is three times higher than manufacturer specifications; prevented by deflating tires by half✓

QUESTION 23 / 25

According to Article 81 of the Road Traffic Safety Law Implementation Regulations, when driving a passenger bus on an expressway in dense fog with visibility of less than 50 meters, what mandatory actions must be taken?

Choose one answer below.

ATurn on fog lights, low beams, clearance lights, and hazard warning flashers; limit speed to no more than 20 km/h; and exit the expressway at the nearest interchange ramp as soon as possible✓BTurn on high beams and travel at 60 km/h in the leftmost overtaking lane to clear the fog bank quickly✓CStop the bus immediately in the central travel lane and wait for the fog to dissipate✓DHonk continuously and follow the rear bumper of the lead vehicle at a distance of 5 meters✓

QUESTION 24 / 25

When operating a heavy passenger coach down long, steep mountain descents, why is continuous friction braking dangerous, and what is the correct operational method?

Choose one answer below.

AContinuous friction braking causes severe brake fade (热衰退) and total brake failure; drivers must pre-select a low gear to utilize engine compression braking and auxiliary retarders (缓速器), strictly prohibiting neutral coasting✓BContinuous braking overheats the air conditioning compressor; drivers must coast in neutral (空挡滑行) and use the handbrake✓CFriction braking causes the steering wheel to reverse its turning direction; drivers must turn off the engine ignition while descending✓DContinuous braking charges the battery excessively; drivers must accelerate intermittently to discharge the alternator✓

QUESTION 25 / 25

When approaching a highway tunnel entrance during bright daytime conditions, what visual phenomenon occurs and how should the bus driver respond?

Choose one answer below.

AThe 'black hole effect' (黑洞效应) causes temporary visual impairment; the driver must reduce speed and turn on low-beam headlights before entering the tunnel✓BThe 'white hole effect' occurs; the driver must put on dark sunglasses and accelerate into the tunnel✓CTunnels have no lighting changes; drivers should maintain maximum expressway cruising speed✓DThe driver should turn on high beams and hazard flashers while honking continuously✓