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Question 51

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

The validity of International Driving Permit is for ________ years.

  1. AOption (a)

    four 

  2. BOption (b)

    one 

  3. COption (c)

    two

  4. DOption (d)

    three 

View answer & explanation

Correct answer

Answer: (b)B.

one 

Why this answer is correct

The correct answer is one.

Key Points

  • The International Driving Permit (IDP) is valid for one year from the date of issue.
  • The IDP allows an individual to drive a private motor vehicle in foreign countries that recognize the permit.
  • It is a translation of the driver’s license into multiple languages, making it easier for authorities in other countries to understand.
  • To apply for an IDP, the applicant must possess a valid driving license from their home country.
  • Applicants are required to provide documents such as passport-sized photographs, a copy of their current driving license, and proof of travel.

Additional Information

  • International Driving Permit (IDP)
  • It is governed by the United Nations Convention on Road Traffic.
  • The IDP is recognized in over 150 countries worldwide, including the USA, UK, Australia, and EU nations.
  • It is not a standalone document; drivers must carry their original driving license along with the IDP.
  • It primarily facilitates driving in countries where the native language differs from that of the driver’s country.
  • Eligibility Criteria for IDP
  • Applicants must hold a valid domestic driving license issued by their home country.
  • The minimum age requirement is generally 18 years, depending on the country issuing the IDP.
  • Applicants should provide proof of travel such as visa and air tickets.
  • Application Process for IDP in India
  • Applicants can apply online through the Ministry of Road Transport and Highways (Parivahan Sewa) portal.
  • Required documents include a valid driving license, passport, visa, and passport-sized photographs.
  • The IDP fee is nominal and varies between states.
  • It is issued by Regional Transport Offices (RTOs) across India.
  • Driving Abroad Without an IDP
  • Driving without an IDP in countries where it is mandatory can result in fines, penalties, or legal action.
  • Some countries allow driving with only a valid domestic license, but it is advisable to verify local regulations before travel.

Question 52

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Colorless, odorless, tasteless poisonous gas is _________ .

  1. AOption (a)

    carbon monoxide

  2. BOption (b)

    carbon dioxide

  3. COption (c)

    nitric oxide

  4. DOption (d)

    Sulphur dioxide 

View answer & explanation

Correct answer

Answer: (a)A.

carbon monoxide

Why this answer is correct

The correct answer is carbon monoxide.

Key Points

  • Carbon monoxide (CO) is a colorless, odorless, tasteless, and highly toxic gas.
  • It is produced by the incomplete combustion of carbon-containing fuels such as gasoline, wood, coal, propane, and natural gas.
  • CO binds with hemoglobin in the blood, forming carboxyhemoglobin, which reduces the oxygen-carrying capacity of the blood, leading to oxygen deprivation in body tissues.
  • Exposure to high levels of carbon monoxide can result in symptoms like headache, dizziness, weakness, confusion, and even death.
  • Common sources of carbon monoxide include vehicle exhaust, malfunctioning furnaces, gas stoves, and generators.

Additional Information

  • Incomplete Combustion: Incomplete combustion occurs when there is insufficient oxygen for the fuel to react completely, resulting in the production of carbon monoxide instead of carbon dioxide.
  • Carboxyhemoglobin: When CO is inhaled, it binds to hemoglobin with an affinity 200-250 times greater than oxygen, preventing oxygen from being transported in the bloodstream.
  • Health Risks: Long-term exposure to low levels of CO can cause chronic health issues, while acute exposure to high levels can lead to carbon monoxide poisoning, brain damage, or death.
  • Detection: Since CO is undetectable by human senses, the use of carbon monoxide detectors in homes and workplaces is strongly recommended to prevent poisoning.
  • Prevention: Regular maintenance of fuel-burning appliances, ensuring proper ventilation, and avoiding the use of generators or grills in enclosed spaces can minimize the risk of CO exposure.

Question 53

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

What is the purpose of catalic converter in IC engine of a car? 

  1. AOption (a)

    Reduce air pollution

  2. BOption (b)

    Reduce temperature

  3. COption (c)

    Reduce speed

  4. DOption (d)

    Reduce oil consumption

View answer & explanation

Correct answer

Answer: (a)A.

Reduce air pollution

Why this answer is correct

The correct answer is Reduce air pollution.

Key Points

  • A catalytic converter is an essential part of the exhaust system in an internal combustion engine, designed to reduce harmful emissions.
  • It converts toxic gases like carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) into less harmful substances such as carbon dioxide (CO2), water (H2O), and nitrogen (N2).
  • The device uses catalysts, typically made of precious metals like platinum, palladium, and rhodium, to facilitate chemical reactions.
  • Catalytic converters play a critical role in reducing air pollution and meeting emission standards set by regulatory authorities.
  • This technology is widely implemented in vehicles to comply with environmental regulations like Bharat Stage Emission Standards in India or Euro standards globally.

Additional Information

  • Emission Standards:
  • Emission standards regulate the permissible limits of exhaust gases released by vehicles to minimize environmental pollution.
  • Examples include Bharat Stage (BS) standards in India and Euro standards in Europe.
  • Key Pollutants:
  • Carbon monoxide (CO): A toxic gas harmful to humans and the environment.
  • Nitrogen oxides (NOx): Contribute to smog and acid rain.
  • Hydrocarbons (HC): Precursors to ground-level ozone, causing respiratory problems.
  • Catalyst Materials:
  • Platinum, palladium, and rhodium are common materials used as catalysts due to their ability to speed up chemical reactions.
  • These metals are resistant to high temperatures and corrosion.
  • Types of Catalytic Converters:
  • Two-way catalytic converters: Convert CO and HC into CO2 and H2O.
  • Three-way catalytic converters: Also reduce NOx in addition to CO and HC.
  • Regulatory Importance:
  • Vehicle manufacturers are required to integrate catalytic converters to comply with legal emission standards.
  • Non-compliance can lead to penalties and restrictions on vehicle use.

Question 54

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

When a cow is standing across the road? 

  1. AOption (a)

    Move fast from behind ignoring cow

  2. BOption (b)

    Move slowly with horn to push it a side

  3. COption (c)

    Wait until it clears the road

  4. DOption (d)

    Pass it from front

View answer & explanation

Correct answer

Answer: (b)B.

Move slowly with horn to push it a side

Why this answer is correct

The correct answer is Move slowly with horn to push it a side.

Key Points

  • When encountering a cow standing across the road, the ideal approach is to move slowly to avoid startling the animal.
  • Using the horn gently can help nudge the cow to move aside without causing distress to the animal.
  • Driving slowly and cautiously ensures the safety of both the driver and the cow, reducing the risk of accidents.
  • This approach aligns with road safety norms and the ethical treatment of animals.
  • Sudden movements or loud noises should be avoided, as they may frighten the animal and lead to unpredictable behavior.

Additional Information

  • Behavior of Cows on Roads:
  • Cows are often found standing or moving slowly on roads in rural and urban areas, especially in India.
  • They can be unpredictable in their movements, so it is crucial to approach them cautiously.
  • Legal and Ethical Considerations:
  • Harming a cow intentionally is a punishable offense in many states in India due to religious and cultural sentiments.
  • Ethical driving involves respecting all living beings, including animals on the road.
  • Road Safety Practices:
  • Driving at a controlled speed in areas prone to animal crossings is essential.
  • Using signals, such as honking gently, can help avoid accidents.
  • Animal Behavior During Honking:
  • Soft honking is less likely to scare animals compared to loud, persistent honking.
  • Animals respond to gradual movements and calm environments, reducing the likelihood of sudden reactions.

Question 55

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which meter is used to indicate distance covered by the vehicle? 

  1. AOption (a)

    Speedometer

  2. BOption (b)

    Techometer

  3. COption (c)

    Multimeter

  4. DOption (d)

    Odometer

View answer & explanation

Correct answer

Answer: (d)D.

Odometer

Why this answer is correct

The correct answer is Odometer.

Key Points

  • An odometer is an instrument used in vehicles to measure the total distance traveled.
  • It records the distance covered in units such as kilometers or miles, depending on the country or vehicle configuration.
  • Odometers can be analog (mechanical) or digital, with modern vehicles typically equipped with digital versions.
  • The word "odometer" originates from the Greek words "hodos" (path or way) and "metron" (measure).
  • It is a critical tool for maintenance scheduling, vehicle resale valuation, and fuel efficiency tracking.

Additional Information

  • Speedometer:
  • A speedometer is an instrument that measures and displays the instantaneous speed of a vehicle.
  • It works in conjunction with the odometer in many vehicles but serves a different purpose.
  • Modern speedometers are often combined with odometers in a single dashboard unit.
  • Tachometer:
  • A tachometer measures the revolutions per minute (RPM) of the engine's crankshaft.
  • It helps drivers monitor engine performance and avoid exceeding the safe RPM range.
  • Multimeter:
  • A multimeter is a device used to measure electrical properties such as voltage, current, and resistance.
  • It is not related to vehicle distance or speed measurements.
  • Applications of Odometers:
  • Used to track service intervals for vehicle maintenance.
  • Helps in estimating the resale value of a vehicle based on total mileage.
  • Contributes to fuel economy analysis by correlating distance traveled with fuel consumed.

Question 56

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which of the following vehicles does not require a PUC certificate in India? 

  1. AOption (a)

    Diesel vehicle

  2. BOption (b)

    Petrol vehicle

  3. COption (c)

    CNG vehicle

  4. DOption (d)

    Electric vehicle

View answer & explanation

Correct answer

Answer: (d)D.

Electric vehicle

Why this answer is correct

The correct answer is Electric vehicle.

Key Points

  • In India, vehicles running on electric power are exempted from requiring a Pollution Under Control (PUC) certificate.
  • A PUC certificate is mandatory for vehicles using fossil fuels such as petrol, diesel, or CNG to ensure emissions meet prescribed standards.
  • Electric vehicles (EVs) do not emit harmful gases such as carbon monoxide, hydrocarbons, or nitrogen oxides, which are typically monitored for pollution control.
  • The Indian government promotes EVs as part of its National Electric Mobility Mission Plan (NEMMP) to reduce vehicular pollution and dependency on fossil fuels.
  • Exempting EVs from PUC certification aligns with India’s commitment to achieving its climate and sustainability goals.

Additional Information

  • Pollution Under Control (PUC) Certificate:
  • A PUC certificate is a document that confirms a vehicle’s emissions are within the permissible limits set by the government.
  • It is mandatory for all vehicles running on petrol, diesel, or CNG.
  • The certificate is issued after testing the vehicle's emissions using specialized equipment.
  • Electric Vehicles (EVs):
  • EVs are powered by an electric motor and battery packs, eliminating the use of internal combustion engines.
  • They are considered environmentally friendly as they do not produce tailpipe emissions.
  • Popular EV models in India include Tata Nexon EV, MG ZS EV, and Ola S1 scooters.
  • Government Initiatives for EVs in India:
  • The Faster Adoption and Manufacturing of Hybrid and Electric Vehicles (FAME) scheme provides subsidies for EV buyers.
  • The National Electric Mobility Mission Plan (NEMMP) aims to reduce dependency on fossil fuels and promote green transportation.
  • Various states offer incentives such as tax exemptions, registration fee waivers, and subsidies for EV adoption.
  • Environmental Benefits of EVs:
  • EVs help in reducing air pollution, especially in urban areas.
  • They contribute to lowering greenhouse gas emissions, mitigating climate change.
  • EVs reduce noise pollution as electric motors operate more quietly than internal combustion engines.

Question 57

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which type of parking is more suitable on a wide road?

  1. AOption (a)

    Parallel

  2. BOption (b)

    Cross

  3. COption (c)

     आनत (Inclined)

  4. DOption (d)

    Inline

View answer & explanation

Correct answer

Answer: (c)C.

 आनत (Inclined)

Why this answer is correct

The correct answer is Inclined Parking.

Key Points

  • Inclined parking, also known as angle parking, involves arranging vehicles at an angle (commonly 30°, 45°, or 60°) to the curb or road.
  • This type of parking is highly suitable for wide roads as it optimizes the use of space and allows easier vehicle entry and exit.
  • Inclined parking can accommodate more vehicles compared to parallel parking in the same space, making it efficient for high-traffic areas.
  • It offers a better view of the road when reversing out, reducing the chances of accidents, especially on busy streets.
  • Inclined parking is often used in areas like malls, public parking lots, and wide urban roads due to its space-efficient design and ease of use.

Additional Information

  • Parallel Parking:
  • Vehicles are parked parallel to the road in a single line, typically along the curb.
  • It is suitable for narrow roads or streets with limited space.
  • While space-efficient in terms of road width, it requires more skill and time to park the vehicle.
  • Perpendicular Parking:
  • Vehicles are parked at a right angle (90°) to the curb or road.
  • It is commonly used in parking lots and garages where ample space is available.
  • While it allows more vehicles to be parked, it requires more road width for maneuvering.
  • Inline Parking:
  • Vehicles are parked in a straight line, one after the other.
  • This type of parking is not commonly used for public spaces but may be seen in specific private parking setups.
  • Parking Efficiency:
  • Inclined parking is more space-efficient for wide roads compared to parallel or perpendicular parking.
  • Properly marked parking spaces and clear signage are essential to ensure smooth vehicle flow.

Question 58

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which of the following can cause the brake warning light to come on?

  1. AOption (a)

    low brake fluid level

  2. BOption (b)

    Damage to the parking brake

  3. COption (c)

    air in the brake line

  4. DOption (d)

    high brake fluid level

View answer & explanation

Correct answer

Answer: (a)A.

low brake fluid level

Why this answer is correct

The correct answer is low brake fluid level.

Key Points

  • Low brake fluid levels are a common cause for the brake warning light to illuminate, as insufficient fluid can lead to reduced hydraulic pressure in the braking system.
  • Brake fluid is essential for transferring force from the brake pedal to the brake pads or shoes, enabling effective braking.
  • Low fluid levels may indicate issues such as leaks in the brake system or worn-out brake pads, which can cause increased fluid consumption.
  • Modern vehicles are equipped with sensors in the brake fluid reservoir that detect when fluid levels drop below the required threshold, triggering the brake warning light.
  • Ignoring the warning light can compromise vehicle safety and lead to brake failure, emphasizing the need for prompt inspection and maintenance.

Additional Information

  • Brake Fluid:
  • Brake fluid is a hydraulic fluid that transfers force within the braking system.
  • It is typically glycol-based for modern vehicles or silicone-based for specialized applications.
  • Brake fluid must maintain specific viscosity and boiling point characteristics to ensure effective braking performance.
  • Brake Warning Light:
  • The brake warning light is an indicator on the dashboard that alerts the driver to potential issues in the braking system.
  • Other causes for this light may include a faulty parking brake sensor, worn brake pads, or air in the brake lines.
  • Hydraulic Braking System:
  • A hydraulic braking system uses brake fluid to transmit force from the brake pedal to the wheels.
  • It consists of components such as a master cylinder, brake lines, calipers, and brake pads or shoes.
  • Proper maintenance of the hydraulic system ensures safe and effective braking.
  • Brake Fluid Maintenance:
  • Brake fluid should be checked regularly for level and contamination.
  • Most manufacturers recommend replacing brake fluid every 2-3 years or as specified in the vehicle's manual.
  • Contaminated or degraded brake fluid can lead to reduced braking efficiency and system damage.

Question 59

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

This sign indicates which of the following?

  1. AOption (a)

    Give away

  2. BOption (b)

    Stop

  3. COption (c)

    No Parking

  4. DOption (d)

    No Entry

View answer & explanation

Correct answer

Answer: (b)B.

Stop

Why this answer is correct

The correct answer is Stop.

Key Points

  • The Stop Sign is a regulatory traffic sign used to control vehicle flow and ensure safety at intersections.
  • It is typically a red octagon with the word "STOP" in white letters, ensuring high visibility and immediate recognition.
  • When approaching a Stop Sign, drivers must come to a complete stop before the intersection or crosswalk.
  • The Stop Sign helps prevent accidents by forcing vehicles to yield to cross traffic or pedestrians before proceeding.
  • Failure to stop at a Stop Sign may result in fines, penalties, or accidents due to non-compliance with traffic laws.

Additional Information

  • Types of Stop Signs
  • All-Way Stop Sign: Used at intersections where traffic from all directions must stop.
  • Yield to Pedestrian Stop Sign: Placed where pedestrian traffic is high, requiring vehicles to stop for pedestrians crossing.
  • School Zone Stop Sign: Often used in school zones, requiring vehicles to stop when children are present or during school hours.
  • International Variations
  • In some countries, Stop Signs are triangular, rectangular, or have different wording based on language.
  • The Stop Sign is universally recognized as a critical safety feature, although its exact design may vary from region to region.
  • Stop Sign Laws
  • Rolling Stops: In many countries, rolling through a stop sign (not coming to a complete stop) is a traffic violation.
  • Legal Penalties: Violations of Stop Sign rules can lead to fines, points on the driver's license, or accidents.
  • Best Practices
  • When approaching a Stop Sign, ensure to stop fully, look both ways, and proceed when it is safe to do so.
  • Always be cautious of pedestrians and other vehicles when driving through an intersection with a Stop Sign.

Question 60

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

When a vehicle is approaching with flashing red or blue light you should? 

  1. AOption (a)

    Speedup your vehicle

  2. BOption (b)

    Stop where you are

  3. COption (c)

    Ignore the vehicle

  4. DOption (d)

    Keep to the left of the road and slow down

View answer & explanation

Correct answer

Answer: (d)D.

Keep to the left of the road and slow down

Why this answer is correct

The correct answer is Keep to the left of the road and slow down.

Key Points

  • When a vehicle with flashing red or blue lights is approaching, it is likely an emergency vehicle such as an ambulance, fire truck, or police car.
  • You must keep to the left side of the road and slow down to ensure a clear passage for the emergency vehicle.
  • Do not attempt to stop abruptly in the middle of the road as this can create confusion and lead to accidents.
  • Allowing free passage to emergency vehicles is not only a legal obligation but also a moral responsibility to ensure timely assistance in critical situations.

Additional Information

  • Emergency Vehicle Lights:
  • Flashing red or blue lights on vehicles typically indicate emergency services such as police, fire brigades, or ambulances.
  • These lights are used to signal the urgency of their movement and request right of way on the road.
  • Legal Obligation:
  • Traffic rules in most countries mandate that vehicles must make way for emergency vehicles.
  • Failure to comply can result in fines, penalties, or other legal consequences.
  • Road Safety Practices:
  • Always stay vigilant for sirens or flashing lights when driving, especially in busy or high-traffic areas.
  • Use rearview mirrors frequently to ensure you are aware of your surroundings.
  • Importance of Quick Response:
  • Emergency vehicles often deal with life-threatening situations where every second counts.
  • Delays caused by blocked roads can result in loss of life or property.