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Question 181

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which is the part of steering system? 

  1. AOption (a)

    Clutch 

  2. BOption (b)

    Odometer 

  3. COption (c)

    Brake drum 

  4. DOption (d)

    Steering wheel  

View answer & explanation

Correct answer

Answer: (d)D.

Steering wheel  

Why this answer is correct

The correct answer is Steering Wheel.

Key Points

  • The steering wheel is an integral component of the steering system in vehicles.
  • It is the primary interface between the driver and the steering mechanism.
  • Through the steering wheel, the driver can control the direction of the vehicle by transmitting rotational movements to the steering column and other linked components.
  • The movement of the steering wheel is facilitated by either a mechanical, hydraulic, or electric power steering system.
  • Modern steering systems often feature power-assisted mechanisms to reduce the effort required by the driver.
  • In addition to controlling the vehicle's direction, many steering wheels come equipped with controls for various features like audio systems, cruise control, and phone connectivity.
  • Most vehicles use a rack-and-pinion mechanism to convert the rotational movement of the steering wheel into linear motion for turning the wheels.

Additional Information

  • Clutch
  • The clutch is a component of the transmission system in vehicles and is used to engage and disengage the power transmission from the engine to the gearbox.
  • It helps in changing gears smoothly and is primarily used in manual transmission vehicles.
  • Odometer
  • An odometer is an instrument used to measure the total distance traveled by a vehicle.
  • It is usually displayed on the vehicle's dashboard and can be either analog or digital.
  • Brake Drum
  • The brake drum is a component of the braking system in vehicles.
  • It works with brake shoes to slow down or stop the vehicle by creating friction.
  • Brake drums are commonly found in rear braking systems of vehicles.

Question 182

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

When a vehicle approaches an unprotected railway level crossing, what should the driver do before crossing it? 

  1. AOption (a)

    Wait till all the trains of the day have passed 

  2. BOption (b)

    Stop the vehicle on the left side of the road, and ensure that no train or trolley is coming from either side 

  3. COption (c)

    Wait till hearing the horn of train and then cross 

  4. DOption (d)

    Sound the horn and cross the track as fast as possible 

View answer & explanation

Correct answer

Answer: (b)B.

Stop the vehicle on the left side of the road, and ensure that no train or trolley is coming from either side 

Why this answer is correct

The Correct answer is Stop the vehicle on the left side of the road, and ensure that no train or trolley is coming from either side.

Key Points

  • Railway level crossings are areas where a road intersects with railway tracks, and safety precautions are vital to prevent accidents.
  • The correct safety practice is to stop the vehicle on the left side of the road and carefully check both sides for any approaching trains or trolleys.
  • This ensures that the driver has a clear view of the railway tracks and can make a safe decision to proceed.
  • Stopping and observing is particularly important because trains have long braking distances, and it is challenging for train operators to halt quickly in case of emergencies.
  • Unprotected railway crossings lack barriers or warning systems, making it necessary for drivers to personally ensure there is no immediate risk.
  • Following this protocol minimizes the chances of collisions and ensures the safety of passengers, pedestrians, and train operators.
  • It is also important to proceed cautiously after confirming that the crossing is clear.
  • In many countries, such practices are mandated by traffic regulations to ensure public safety at railway crossings.

Additional Information

  • Wait till all the trains of the day have passed
  • This option is impractical as it would lead to unnecessary delays for drivers and passengers.
  • Trains run throughout the day, and waiting for all trains would disrupt daily transportation and activities.
  • Wait till hearing the horn of train and then cross
  • Trains might not always use their horn, especially if they are far from the crossing. Relying solely on hearing the horn can be unsafe.
  • Environmental factors such as noise pollution can also make it difficult to hear the horn clearly.
  • Sound the horn and cross the track as fast as possible
  • Sounding the horn does not alert train operators effectively or guarantee safety.
  • Crossing tracks hastily can lead to accidents, especially if there is an approaching train or trolley.

Question 183

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which of the following is not component of lighting system of a car? 

  1. AOption (a)

    Horn 

  2. BOption (b)

    Headlight  

  3. COption (c)

    Rear light

  4. DOption (d)

    Side light

View answer & explanation

Correct answer

Answer: (a)A.

Horn 

Why this answer is correct

The Correct answer is Horn.

Key Points

  • The Horn is not a component of the lighting system of a car. Instead, it is an integral part of the car's auditory warning system.
  • The primary purpose of the horn is to emit sound to alert other drivers, pedestrians, or animals to the vehicle's presence, especially in potential collision scenarios.
  • The horn operates using an electric circuit that generates sound waves when activated.
  • It is typically located on the steering wheel for easy access and is regulated by laws and guidelines to ensure it is not overly loud or disruptive.
  • Horns are essential for road safety, but they are not related to the car's lighting system, which is primarily designed for visibility and signaling.

Additional Information

  • Headlight
  • Headlights are a crucial part of a car's lighting system. They are mounted at the front of the vehicle to provide illumination during low-light conditions, such as nighttime driving or fog.
  • They come in various types, such as halogen, LED, and xenon (HID), with LED being the most energy-efficient.
  • Headlights have dual modes: high beam for long-distance visibility and low beam for nearby illumination, minimizing glare to oncoming traffic.
  • Rear Light
  • Rear lights are mounted at the back of the vehicle and play a critical role in ensuring the vehicle is visible to others from behind.
  • They include brake lights, which light up when the brake is applied, and indicator lights for signaling turns or lane changes.
  • Rear lights enhance road safety by preventing rear-end collisions.
  • Side Light
  • Side lights, also known as parking lights, are positioned on the sides of a car to provide visibility when parked or during low-light conditions.
  • They are smaller and dimmer than headlights, primarily used to mark the presence of a vehicle.
  • In some regions, side lights are a legal requirement for parking on narrow or dimly lit roads.

Question 184

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

As per BS-VI emission norms, diesel vehicles will have to reduce their HC + NOx (hydro carbon + nitrogen oxides) by ______ percent.  

  1. AOption (a)

    95

  2. BOption (b)

    82

  3. COption (c)

    43

  4. DOption (d)

    68

View answer & explanation

Correct answer

Answer: (c)C.

43

Why this answer is correct

The Correct answer is 43%.

Key Points

  • The BS-VI emission norms, implemented in India from April 1, 2020, represent a significant upgrade in the country's vehicular emissions standards.
  • Under BS-VI norms, diesel vehicles are required to reduce their Hydrocarbons (HC) and Nitrogen Oxides (NOx) emissions by 43% compared to the previous BS-IV standards.
  • The transition from BS-IV to BS-VI involves the use of advanced engine technologies, such as Selective Catalytic Reduction (SCR) and Diesel Particulate Filters (DPF), which help reduce emissions.
  • BS-VI fuel has a significantly lower sulfur content (10 parts per million) compared to BS-IV fuel (50 parts per million), which enables better emission control.
  • BS-VI norms aim to reduce vehicular pollution and align India's emission standards with global benchmarks like the Euro 6 standards.
  • The reduction of HC + NOx emissions is critical as these pollutants contribute to smog formation and have adverse effects on human health and the environment.
  • BS-VI norms also mandate the introduction of On-Board Diagnostic (OBD) systems to monitor and control emissions in real-time.

Additional Information

  • BS-VI Norms
  • BS-VI stands for Bharat Stage VI, the Indian equivalent of Euro 6 emission standards.
  • It was implemented in a leapfrogging manner, skipping the intermediate BS-V stage entirely, to address the severe air pollution issues in India.
  • BS-VI standards require a significant reduction in emissions of Particulate Matter (PM) and NOx, especially for diesel vehicles.
  • BS-VI also introduces Real Driving Emissions (RDE) testing to measure a vehicle's emissions in real-world conditions.
  • Hydrocarbons (HC) and Nitrogen Oxides (NOx)
  • Hydrocarbons (HC) are volatile organic compounds that contribute to the formation of ground-level ozone and smog.
  • Nitrogen Oxides (NOx) are gases that cause acid rain, respiratory problems, and contribute to the formation of fine particulate matter and ozone.
  • Reduction of HC + NOx emissions is crucial for improving air quality and mitigating climate change.

Question 185

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

The technician checks the cooling system of the vehicle by topping up the ______.

  1. AOption (a)

    oil 

  2. BOption (b)

    normal water 

  3. COption (c)

    acid 

  4. DOption (d)

    coolant

View answer & explanation

Correct answer

Answer: (d)D.

coolant

Why this answer is correct

The Correct answer is coolant.

Key Points

  • The coolant is a specially formulated liquid used in the cooling systems of vehicles to regulate the engine temperature.
  • It prevents the engine from overheating during operation and protects it from freezing in cold climates.
  • Coolants are typically composed of a mixture of ethylene glycol or propylene glycol and water, along with additives to prevent corrosion and improve efficiency.
  • Using a coolant ensures the optimal performance of the engine by maintaining a consistent temperature range.
  • It also helps in prolonging the lifespan of the vehicle’s engine and other components by protecting them from extreme thermal stress.
  • Coolants are available in different types, such as Inorganic Acid Technology (IAT), Organic Acid Technology (OAT), and Hybrid Organic Acid Technology (HOAT), depending on the specific requirements of the vehicle.
  • Regularly checking and replacing the coolant is part of essential vehicle maintenance to avoid overheating or engine damage.

Additional Information

  • Oil
  • Oil is used for lubricating the engine and its components to reduce friction and wear.
  • It is not used in the cooling system, but it plays a vital role in maintaining the engine’s health and performance.
  • Common types of oil include synthetic oil, conventional oil, and semi-synthetic oil, depending on the vehicle type.
  • Normal Water
  • Though normal water can be used in emergencies, it is not recommended for long-term use in cooling systems.
  • Water lacks the necessary anti-corrosion and anti-freezing properties provided by coolants, which can lead to damage over time.
  • It may also cause mineral deposits and scale formation inside the cooling system, affecting efficiency.
  • Acid
  • Acid is not suitable for cooling systems as it can damage the engine components by causing corrosion.
  • Acids are typically used in industrial applications or chemical processes but are not relevant to vehicle cooling systems.

Question 186

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Temporary registration of a motor vehicle is valid for a maximum of ________.

  1. AOption (a)

    6 months 

  2. BOption (b)

    3 months 

  3. COption (c)

    1 months 

  4. DOption (d)

    2 months 

View answer & explanation

Correct answer

Answer: (c)C.

1 months 

Why this answer is correct

The Correct answer is 1 month.

Key Points

  • Temporary registration of a motor vehicle is issued to facilitate its usage before obtaining permanent registration.
  • This type of registration is valid for a maximum of 1 month as per the Motor Vehicles Act, 1988.
  • The temporary registration is usually provided by the dealer or authority where the vehicle is purchased.
  • It is intended to allow the owner sufficient time to complete the formalities for permanent registration.
  • Permanent registration is mandatory for a vehicle to legally operate on Indian roads.
  • If the vehicle owner fails to obtain permanent registration within the temporary registration validity period, they may face legal penalties as per the guidelines of state transport authorities.
  • The Central Motor Vehicles Rules (CMVR) govern the registration process for vehicles in India.
  • Temporary registration can only be extended under specific circumstances, and such extensions require approval from the concerned Regional Transport Office (RTO).
  • This provision is in place to ensure compliance with traffic laws and prevent misuse of temporary registration.

Additional Information

  • 6 months:
  • In India, there is no provision under the Motor Vehicles Act for temporary registration to be valid for 6 months.
  • The maximum validity is restricted to 1 month to ensure timely compliance with permanent registration requirements.
  • 3 months:
  • Temporary registration for 3 months is not applicable under Indian laws. The Motor Vehicles Act, 1988 clearly limits the validity period to 1 month.
  • 2 months:
  • Temporary registration for 2 months is also not allowed under current legal frameworks in India. Only exceptional cases may allow for extensions, subject to approval from RTO authorities.

Question 187

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

After the expiry of period of _______ from the date of first registration, every motor vehicle is required to carry a valid PUC Certificate. 

  1. AOption (a)

    two years 

  2. BOption (b)

    six months 

  3. COption (c)

    eighteen months 

  4. DOption (d)

    one year 

View answer & explanation

Correct answer

Answer: (d)D.

one year 

Why this answer is correct

The Correct answer is one year.

Key Points

  • According to the Motor Vehicles Act, 1988, it is mandatory for all motor vehicles to have a valid Pollution Under Control (PUC) Certificate.
  • After the expiry of one year from the date of first registration, every motor vehicle must carry a valid PUC Certificate to ensure compliance with emission norms.
  • The PUC Certificate certifies that the emissions of the vehicle are within permissible limits set by the government to prevent air pollution.
  • Vehicles are subjected to emission tests at authorized PUC centers, and the certificate is issued only if the vehicle passes these tests.
  • Non-compliance with this regulation can result in penalties as per the provisions of the Motor Vehicles Act.
  • This rule is part of India's efforts to combat environmental degradation and ensure sustainable transportation.
  • The renewal period for a PUC Certificate after the first year depends on the vehicle type and its compliance with emission standards.

Additional Information

  • Two years
  • A PUC Certificate is not valid for two years after the first registration. The actual validity period is one year, as mentioned in the Motor Vehicles Act.
  • Six months
  • Six months is the renewal period for certain vehicles, especially those that are older or emit higher levels of pollutants, but it is not the initial validity period.
  • Eighteen months
  • There is no provision in the Motor Vehicles Act for a PUC Certificate to be valid for eighteen months.

Question 188

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

This sign means 

  1. AOption (a)

    Hospital 

  2. BOption (b)

    No entry 

  3. COption (c)

    Stop 

  4. DOption (d)

    No parking  

View answer & explanation

Correct answer

Answer: (b)B.

No entry 

Why this answer is correct

The Correct answer is No Entry.

Key Points

  • The No Entry sign is a prohibitory traffic sign represented by a red circular border with a white horizontal line across it.
  • This sign indicates that entry of vehicles is not allowed from the direction in which the sign is facing.
  • It is generally installed at one-way roads, restricted areas, and security zones where the movement of traffic is prohibited from one side.
  • The main purpose of this sign is to ensure smooth traffic regulation and prevent head-on collisions or congestion.
  • Violation of this sign can lead to penalties under the Motor Vehicles Act, 1988 in India.
  • This traffic rule is standardized by the Indian Road Congress (IRC) and is also in alignment with international traffic conventions.
  • Such signs are especially important in high-density urban areas to maintain safe and organized traffic flow.
  • It is crucial for drivers to obey this sign to avoid legal consequences and ensure road safety.

Additional Information

  • Hospital
  • A hospital sign is an informative traffic sign usually represented with the symbol "H" on a blue background.
  • It indicates the presence of a medical facility nearby for emergencies and treatments.
  • This helps drivers identify places to seek medical assistance in case of accidents or health issues on the road.
  • Stop
  • The Stop sign is a mandatory traffic sign usually shaped as an octagon in red color with the word "STOP" written in white.
  • It requires drivers to halt completely at intersections, pedestrian crossings, or railway crossings before proceeding.
  • No Parking
  • The No Parking sign is a prohibitory sign with a red circular border and a crossed "P" symbol inside.
  • It indicates that vehicles cannot be parked at the designated spot but they may be allowed to halt temporarily for loading/unloading passengers or goods.

Question 189

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

How can we reduce the air pollutions from vehicle?

I. Maintaining vehicles regularly

II. Replace old vehicles

III. Car pooling

  1. AOption (a)

    Only III

  2. BOption (b)

    I, II and III

  3. COption (c)

    I and II only

  4. DOption (d)

    Only I

View answer & explanation

Correct answer

Answer: (b)B.

I, II and III

Why this answer is correct

The Correct answer is I, II and III.

Key Points

  • Maintaining vehicles regularly helps in reducing emissions from vehicles. Regular servicing ensures that the vehicle's engine, exhaust system, and fuel system are working efficiently. Inefficient vehicles tend to emit higher levels of harmful gases like carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons.
  • Replacing old vehicles is an effective measure as older vehicles tend to have outdated technology and lack advanced emission control systems. Modern vehicles are equipped with technologies such as catalytic converters and comply with stricter emission norms, which help in reducing air pollution.
  • Carpooling significantly reduces the number of vehicles on the road, thereby lowering the overall emissions. Fewer vehicles mean reduced fuel consumption and less emission of harmful pollutants like particulate matter (PM), sulfur dioxide (SO2), and greenhouse gases.
  • By adopting these measures, we can contribute to a cleaner environment and reduce the negative effects of air pollution, such as respiratory diseases, climate change, and environmental degradation.

Additional Information

  • Maintaining vehicles regularly
  • Regular vehicle maintenance involves tasks like checking tire pressure, changing engine oil, cleaning air filters, and tuning the engine.
  • Proper maintenance improves fuel efficiency, reduces emissions, and extends the vehicle's lifespan.
  • It is recommended to follow the manufacturer's service schedule for optimal results.
  • Replacing old vehicles
  • Older vehicles contribute significantly to air pollution due to their low fuel efficiency and lack of modern emission control systems.
  • Government initiatives like the Vehicle Scrappage Policy in India encourage the phasing out of old and polluting vehicles.
  • Replacing old vehicles with electric vehicles (EVs) or hybrid vehicles can further reduce emissions.
  • Carpooling
  • Carpooling is a practice where multiple people share a single vehicle for commuting, thereby reducing the number of vehicles on the road.
  • It not only helps in reducing air pollution but also decreases traffic congestion and saves fuel costs.
  • Several mobile applications and platforms facilitate carpooling by connecting commuters traveling on the same route.

Question 190

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

When a traffic light is on red, you should 

  1. AOption (a)

    Keep to the left of the road and slow down 

  2. BOption (b)

    Ignore and move 

  3. COption (c)

    Stop the vehicle 

  4. DOption (d)

    Speedup your vehicle 

View answer & explanation

Correct answer

Answer: (c)C.

Stop the vehicle 

Why this answer is correct

The Correct answer is Stop the vehicle.

Key Points

  • When a traffic light is on red, it is a universal signal to stop the vehicle. This rule is followed globally to ensure road safety and prevent accidents.
  • Red lights are a part of the traffic signal system and are designed to regulate the movement of vehicles and pedestrians at intersections or road crossings.
  • Stopping at a red light allows other vehicles, pedestrians, or cyclists to safely cross the junction or intersection.
  • Failure to stop at a red light can lead to serious legal consequences, including fines, license suspension, and increased insurance premiums.
  • Stopping at a red light helps maintain traffic discipline, ensuring that every road user gets their turn to proceed.
  • It is a crucial practice for avoiding traffic congestion and ensuring the smooth flow of vehicles.
  • The red light system is also part of broader road safety laws and guidelines, which are enforced by traffic authorities worldwide.
  • Not adhering to the red light signal can lead to accidents, endangering the lives of drivers, passengers, and pedestrians.

Additional Information

  • Keep to the left of the road and slow down
  • While it is important to keep to the left and slow down in certain situations, this is not the correct response to a red traffic light.
  • This action is typically applicable in scenarios like approaching a roundabout, merging lanes, or when there is a "Give Way" sign.
  • Ignore and move
  • Ignoring a red traffic light is a traffic violation and can lead to accidents, fines, and legal consequences.
  • This action goes against the principles of road safety and traffic discipline.
  • Speed up your vehicle
  • Speeding up the vehicle at a red light is extremely dangerous and can result in collisions at intersections.
  • It is a reckless action that violates traffic rules and endangers the lives of other road users.