Take TESDA Driving NC III Practice Questions - Driving (Articulated Vehicle Heavy Truck) NC III (TESDA Philippines) Exam

QUESTION 1 / 25

Which LTO driver's license code is required to operate a heavy articulated vehicle (semi-trailer) with a trailer Gross Vehicle Weight (GVW) exceeding 3,500 kg in the Philippines?

Choose one answer below.

ADL Code CE✓BDL Code BE✓CDL Code C✓DDL Code D✓

QUESTION 2 / 25

What is the minimum age requirement to apply for an LTO Professional Driver's License in the Philippines?

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A16 years old✓B17 years old✓C18 years old✓D21 years old✓

QUESTION 3 / 25

In the driver safety inspection acronym 'BLOWBAGETS,' what does the letter 'A' stand for?

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AAxle✓BAir✓CAlternator✓DAlignment✓

QUESTION 4 / 25

What is the general maximum speed limit for cargo trucks on expressways (such as NLEX, SLEX, TPLEX) in the Philippines?

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A60 kph✓B80 kph✓C100 kph✓D120 kph✓

QUESTION 5 / 25

Under Republic Act No. 8794 (Anti-Overloading Law), what is the maximum allowable single-axle load limit for trucks in the Philippines?

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A10,000 kg✓B12,000 kg✓C13,500 kg✓D15,000 kg✓

QUESTION 6 / 25

What is the primary purpose of securing cargo with straps or chains on a flatbed semi-trailer?

Choose one answer below.

ATo improve the aerodynamic efficiency of the trailer✓BTo prevent the cargo from shifting, falling, or leaking during transit✓CTo increase the maximum load capacity of the trailer suspension✓DTo comply with noise pollution regulations in urban areas✓

QUESTION 7 / 25

What color is standard for the low air pressure warning light on a heavy truck's dashboard?

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ABlue✓BGreen✓CRed✓DYellow✓

QUESTION 8 / 25

When coupling a tractor to a semi-trailer, at what height should the trailer nose be relative to the center of the fifth wheel?

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ASignificantly higher, so the tractor does not touch the trailer nose plate✓BSlightly lower than the center of the fifth wheel, so the tractor lifts the trailer slightly✓CExactly three inches higher than the highest point of the tractor cab✓DAt any height, because the fifth wheel self-adjusts during the backing process✓

QUESTION 9 / 25

What does the term 'off-tracking' mean when an articulated truck turns?

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AThe trailer wheels sliding sideways on wet asphalt roads✓BThe trailer's rear wheels following a shorter path than the tractor's front wheels during a turn✓CThe air lines disconnecting from the trailer gladhands during a sharp turn✓DThe truck's GPS tracking device losing satellite connection✓

QUESTION 10 / 25

Why is it necessary to apply heavy grease/lubricant to the tractor's fifth wheel plate?

Choose one answer below.

ATo prevent rust on the tractor's rear chassis frame✓BTo reduce friction and prevent steering binding when the tractor and trailer turn✓CTo seal the electrical connections between the tractor and trailer✓DTo make the trailer landing gear easier to raise and lower✓

QUESTION 11 / 25

What is the recommended minimum following distance (in seconds) that a heavy truck driver should maintain behind another vehicle under good weather conditions?

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A1 second✓B2 seconds✓C4 seconds✓D8 seconds✓

QUESTION 12 / 25

What is the function of the tractor protection valve in an articulated vehicle's air brake system?

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AIt prevents the engine from overheating during heavy acceleration✓BIt automatically seals the tractor's air brake system if the trailer breaks away or leaks✓CIt regulates the charging current of the truck battery✓DIt allows the driver to adjust the ride height of the tractor cabin✓

QUESTION 13 / 25

What is the purpose of Diesel Exhaust Fluid (DEF) in modern heavy-duty diesel engines?

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ATo lubricate the fuel injectors and fuel pump✓BTo increase the cetane rating and power output of diesel fuel✓CTo reduce nitrogen oxide (NOx) emissions in the exhaust system✓DTo prevent diesel fuel from waxing in cold high-altitude mountain areas✓

QUESTION 14 / 25

Why is it highly recommended to avoid shifting gears while driving a heavy truck across railroad tracks?

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ATo prevent excessive wear on the transmission synchronizers✓BTo reduce the risk of the transmission getting stuck in neutral or stalling on the tracks✓CTo comply with national noise pollution ordinances✓DTo keep the engine RPM from dropping below the idle speed threshold✓

QUESTION 15 / 25

Which of the following is the only correct method for checking the inflation pressure of heavy truck tires?

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AStriking the tire tread with a wooden club or metal bar (thumping)✓BChecking the tire pressure using a calibrated tire pressure gauge✓CVisually inspecting the tire bulge at the bottom contact patch✓DPressing the tire sidewall with your thumb to check for firmness✓

QUESTION 16 / 25

If a heavy truck suffers a mechanical breakdown on a national road, what is the driver's first immediate safety action?

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ALeave the vehicle to search for a local mechanic shop✓BActivate the hazard warning lights (double signals) and move the vehicle safely to the shoulder✓CPlace Early Warning Devices (EWDs) in the middle of the road to block oncoming traffic✓DAttempt to repair the vehicle engine while parked in the active driving lane✓

QUESTION 17 / 25

Which air line connects the tractor to the trailer's emergency and parking brake system, and is typically color-coded red?

Choose one answer below.

AThe service line✓BThe vacuum line✓CThe emergency line✓DThe auxiliary line✓

QUESTION 18 / 25

Which air line transmits control signals from the tractor's foot brake pedal to the trailer service brakes, and is typically color-coded blue?

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AThe emergency line✓BThe service line✓CThe return line✓DThe bypass line✓

QUESTION 19 / 25

When backing an articulated vehicle, in which direction must you turn the steering wheel first to make the trailer turn to the left?

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ATurn the steering wheel to the left✓BTurn the steering wheel to the right✓CKeep the steering wheel perfectly straight✓DPull forward and turn the wheel left✓

QUESTION 20 / 25

What is the standard daytime truck ban schedule enforced on major roads in Metro Manila by the MMDA (except on Sundays and official holidays)?

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A12:00 AM to 12:00 PM✓B6:00 AM to 9:00 AM only✓C6:00 AM to 10:00 AM and 5:00 PM to 10:00 PM✓D12:00 PM to 3:00 PM and 6:00 PM to 9:00 PM✓

QUESTION 21 / 25

What is the danger of removing the radiator pressure cap from a truck's cooling system when the engine is hot?

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AIt will cause the engine battery to discharge✓BHigh-pressure boiling coolant and steam can erupt and cause severe burns✓CIt will damage the fuel injection pump✓DIt will void the vehicle registration immediately✓

QUESTION 22 / 25

What does the term 'double-clutching' mean when driving a manual transmission heavy truck?

Choose one answer below.

APressing the clutch pedal all the way down and holding it while shifting through three gears✓BPressing the clutch pedal to shift to neutral, releasing it, and pressing it again to shift into the next gear✓CUsing two feet to press the clutch and brake pedals simultaneously✓DPressing the clutch pedal halfway down to slip the gears without disengaging the engine✓

QUESTION 23 / 25

Under LTO guidelines, what is the required placement for the red Early Warning Device (EWD) when a truck breaks down on a national road?

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AInside the driver's cabin facing the rear window✓BExactly 4 meters to the front and 4 meters to the rear of the disabled vehicle✓COn top of the truck roof next to the exhaust pipe✓D100 meters away on the opposite side of the highway only✓

QUESTION 24 / 25

What is the primary physical cause of a tractor-trailer jackknife?

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AThe trailer's cargo shifting to the rear axle✓BThe tractor's drive wheels locking up and sliding, causing the tractor to spin around the fifth wheel pivot✓CThe front steer tires of the tractor losing air pressure suddenly✓DThe trailer brakes locking up while the tractor continues to steer straight✓

QUESTION 25 / 25

What is the minimum legal tread depth for steering (front) tires on a commercial truck under safety regulations?

Choose one answer below.

A1.6 mm (2/32 inch)✓B3.2 mm (4/32 inch)✓C4.8 mm (6/32 inch)✓D6.4 mm (8/32 inch)✓