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Question 281

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

India is a _____ country. 

  1. AOption (a)

    both hand drive

  2. BOption (b)

    right hand drive

  3. COption (c)

    middle hand drive

  4. DOption (d)

    left hand drive

View answer & explanation

Correct answer

Answer: (b)B.

right hand drive

Why this answer is correct

The Correct answer is right hand drive.

Key Points

  • India follows the right-hand drive system, meaning vehicles have their steering wheels on the right side of the car.
  • This system is a legacy of British colonial rule, as the British implemented the practice in their colonies, including India.
  • In a right-hand drive country, vehicles are driven on the left side of the road. This is the standard practice in India.
  • The Motor Vehicles Act, 1988, governs the rules and regulations for driving in India, including adherence to driving on the left side of the road.
  • Countries like India, Australia, the UK, and Japan follow the right-hand drive system, making it a common practice in these nations.
  • The system is designed to ensure efficient traffic flow and minimize accidents, as vehicles are driven in a manner that ensures maximum visibility on the opposite lane.
  • In India, the introduction of the right-hand drive system aligns with the country's historical and infrastructural context, including the design of roads and transport systems.

Additional Information

  • Both hand drive
  • This term is not applicable in real-world driving systems, as countries adopt either the left-hand drive or right-hand drive system, not both.
  • It might refer to a vehicle's adaptability for driving in both left-hand and right-hand drive countries, which is rare but possible with modifications.
  • Middle hand drive
  • This is not a recognized driving system. It is an incorrect option, as vehicles are not designed to have steering systems in the middle of a car for driving purposes.
  • Left hand drive
  • A left-hand drive system is followed in countries like the USA, Canada, and most European nations.
  • In a left-hand drive system, the steering wheel is positioned on the left side of the car, and vehicles are driven on the right side of the road.

Question 282

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which of the following is NOT a function of a gear box? 

  1. AOption (a)

    To provide a means to vary the leverage or torque ratio between the engine and the road wheels as required

  2. BOption (b)

    It provides a means to reverse the car by selecting the reverse gear

  3. COption (c)

    provides a neutral position so that the engine and the road wheels are disconnected even with the clutch in the engaged position

  4. DOption (d)

    Provides a means to reduce the wear and tear of the tyres

View answer & explanation

Correct answer

Answer: (d)D.

Provides a means to reduce the wear and tear of the tyres

Why this answer is correct

The correct answer is Provides a means to reduce the wear and tear of the tyres.

Key Points

  • A gearbox, also known as a transmission, is primarily designed to manage the power and torque from the engine and transmit it efficiently to the vehicle's wheels.
  • It does not have any direct role in reducing the wear and tear of tyres.
  • Tyre wear is influenced by factors such as road conditions, driving habits, tyre quality, and alignment, not the gearbox.
  • The gearbox's functions are related to ensuring proper speed, torque distribution, and smooth movement of the vehicle.
  • While the gearbox indirectly contributes to smoother vehicle operation, tyre wear is a mechanical outcome unrelated to the gearbox's operation.

Additional Information

  • To provide a means to vary the leverage or torque ratio between the engine and the road wheels as required
  • The gearbox adjusts the torque ratio to ensure optimal power delivery under varying driving conditions.
  • It allows the vehicle to operate efficiently at different speeds and loads.
  • It provides a means to reverse the car by selecting the reverse gear
  • The gearbox includes a reverse gear that enables the vehicle to move backward.
  • This function is essential for parking and maneuvering in tight spaces.
  • Provides a neutral position so that the engine and the road wheels are disconnected even with the clutch in the engaged position
  • The neutral gear allows the engine to run without transmitting power to the wheels.
  • This feature is useful when the car is stationary but the engine is running.

Question 283

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

The following sign represents.

  1. AOption (a)

    Hotel 

  2. BOption (b)

    Dangerous zone

  3. COption (c)

    Hospital

  4. DOption (d)

    First aid post

View answer & explanation

Correct answer

Answer: (d)D.

First aid post

Why this answer is correct

The Correct answer is First aid post.

Key Points

  • This sign is represented by a red cross symbol inside a blue square border.
  • It indicates the presence of a First aid post where facilities are available, but not necessarily a full hospital.
  • It is categorized under informative signs in the Indian Road Congress (IRC) guidelines and the Motor Vehicles Act, 1988.
  • Hospitals play an important role in providing emergency care during accidents on highways or city roads.
  • The sign ensures that people can quickly locate healthcare facilities during emergencies, especially in accident-prone or remote areas.
  • Placement of this sign is usually seen on national highways, expressways, and near cities or towns where a hospital is accessible.
  • Its function is to guide motorists to the nearest healthcare or trauma care center without confusion.

Additional Information

  • Hotel
  • The sign for a hotel usually shows a bed symbol or an icon that indicates lodging facilities.
  • These are categorized under informative signs meant for the convenience of travelers.
  • They are generally placed on highways, expressways, or near tourist spots where rest and lodging facilities are available.
  • Dangerous Zone
  • Such areas are marked by warning signs that often include a yellow triangle with black symbols.
  • They caution drivers about accident-prone zones, sharp curves, landslide areas, or high-risk stretches of road.
  • These signs help in preventing road accidents by alerting drivers to reduce speed and take precautions.
  • First Aid Post
  • This sign generally includes a green cross symbol on a white background.
  • It indicates a location where basic first aid facilities are available but not necessarily a full hospital.
  • These are useful in providing initial treatment before shifting patients to a proper hospital or trauma care unit.

Question 284

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Section 14 of The Motor Vehicles Act, 1988 is related with ___. 

  1. AOption (a)

    Effectiveness in India of registration

  2. BOption (b)

    Effect of disqualification order

  3. COption (c)

    Currency of licences to drive motor vehicles

  4. DOption (d)

    Necessity for registration

View answer & explanation

Correct answer

Answer: (c)C.

Currency of licences to drive motor vehicles

Why this answer is correct

The Correct answer is Currency of licences to drive motor vehicles.

Key Points

  • Section 14 of The Motor Vehicles Act, 1988 deals with the Currency of licences to drive motor vehicles.
  • This section specifies the validity period of a driving licence for different categories of vehicles and drivers.
  • For a person below the age of 50 years, a driving licence is valid for a period of 20 years from the date of issue or until the person attains the age of 50 years, whichever is earlier.
  • For individuals above 50 years, the licence is valid for a period of 5 years.
  • In the case of a licence issued for a transport vehicle, it is valid for a period of 3 years.
  • The provision ensures the regular renewal of licences, contributing to the safety and regulation of traffic on roads.
  • Additionally, medical fitness is taken into account, especially for individuals above the age of 50 or those applying for transport vehicle licences.

Additional Information

  • Effectiveness in India of registration
  • This pertains to the validity of a motor vehicle's registration across the country.
  • It ensures that a vehicle registered in one state is legally valid in other states as well, under certain conditions.
  • Effect of disqualification order
  • This section deals with the consequences of disqualification of a driver, which may include suspension or cancellation of their driving licence.
  • Disqualification may occur due to serious offences or violations under traffic rules and regulations.
  • Necessity for registration
  • This section highlights that no person can drive an unregistered motor vehicle in public places.
  • The registration of vehicles is mandatory to ensure accountability and regulation of motor vehicles on Indian roads.

Question 285

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Which of the following is NOT involved in road safety? 

  1. AOption (a)

    Systems of traffic safety and control

  2. BOption (b)

    Design of roads and highways

  3. COption (c)

    Authority where vehicle is registered

  4. DOption (d)

    Driver education

View answer & explanation

Correct answer

Answer: (c)C.

Authority where vehicle is registered

Why this answer is correct

The Correct answer is Authority where vehicle is registered.

Key Points

  • The authority where a vehicle is registered is primarily responsible for vehicle registration and maintaining ownership records, not road safety.
  • This authority is concerned with issuing registration numbers, ensuring that vehicles meet the required standards for registration, and maintaining a database for legal and administrative purposes.
  • Road safety, on the other hand, is directly influenced by factors such as traffic systems, road design, and driver education.
  • While maintaining records of vehicles may indirectly support law enforcement, it does not actively contribute to preventing accidents or enhancing road safety.
  • For instance, in India, the Regional Transport Office (RTO) handles vehicle registration, but road safety involves broader measures like designing better roads and educating drivers.

Additional Information

  • Systems of traffic safety and control
  • These systems include traffic lights, road signs, speed limits, and other mechanisms designed to regulate traffic flow and prevent accidents.
  • They play a crucial role in ensuring the safe movement of vehicles and reducing road hazards.
  • Examples of traffic control systems include automated traffic signals, CCTV cameras for surveillance, and intelligent traffic management systems.
  • Design of roads and highways
  • The design of roads significantly impacts road safety, as poorly designed roads can lead to accidents.
  • Key aspects include lane width, road surface quality, drainage systems, and proper signage.
  • For instance, expressways are designed for high-speed traffic with features like divided lanes and guardrails to enhance safety.
  • Driver education
  • Driver education focuses on teaching individuals the rules of the road, safe driving practices, and the importance of traffic laws.
  • It includes theoretical knowledge (such as understanding traffic signs) as well as practical training on how to handle vehicles in various conditions.
  • Proper driver education helps reduce reckless driving, over-speeding, and other causes of road accidents.

Question 286

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Leakage of _________ can affect engine temperature and cause overheating, which can damage parts. 

  1. AOption (a)

    lubricating oil

  2. BOption (b)

    coolant

  3. COption (c)

    combustible gases

  4. DOption (d)

    gear oil

View answer & explanation

Correct answer

Answer: (b)B.

coolant

Why this answer is correct

The Correct answer is coolant.

Key Points

  • A coolant is a substance used in vehicles and machinery to regulate and maintain the temperature of the engine during operation.
  • It helps in absorbing heat from the engine and then dissipating it, typically through the radiator, ensuring the engine operates within the desired temperature range.
  • Leakage of coolant can result in insufficient heat regulation, causing the engine to overheat. Overheating can lead to severe damage to engine components such as the cylinder head, pistons, and gaskets.
  • The most common type of coolant is a mixture of water and antifreeze (ethylene glycol or propylene glycol), which not only regulates temperature but also prevents the coolant from freezing in cold conditions or boiling in high temperatures.
  • Coolants often contain additives to prevent corrosion and enhance the lifespan of the engine and cooling system.
  • Regular maintenance, including checking for leaks, is essential to ensure the coolant system functions optimally.

Additional Information

  • Lubricating Oil
  • Lubricating oil, also called engine oil, is primarily used to reduce friction between moving engine parts and to prevent wear and tear.
  • It provides a thin film between metal surfaces, ensuring smooth operation and reducing heat generated by friction.
  • While a lack of lubricating oil can lead to overheating, its primary role is lubrication, not regulating engine temperature like coolant.
  • Combustible Gases
  • Combustible gases such as fuel vapors are involved in the combustion process within the engine cylinders to generate power.
  • Leaks of combustible gases can cause fire hazards or reduce engine efficiency, but they do not directly affect engine cooling or temperature control.
  • Gear Oil
  • Gear oil is a specialized lubricant used in the gearbox or transmission system of vehicles to reduce friction and wear on gears.
  • It is not involved in the engine's cooling system and does not impact engine temperature regulation.

Question 287

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

A vehicle having a white license plate with black letters means that it is a _________ vehicle. 

  1. AOption (a)

    Transport

  2. BOption (b)

    Private

  3. COption (c)

    Electric

  4. DOption (d)

    Military

View answer & explanation

Correct answer

Answer: (b)B.

Private

Why this answer is correct

The Correct answer is Private.

Key Points

  • A vehicle with a white license plate and black letters denotes that it is a private vehicle.
  • These vehicles are typically used for personal purposes and not for commercial or transport services.
  • In India, the system of color-coded license plates is regulated by the Ministry of Road Transport and Highways (MoRTH) to distinguish between different categories of vehicles.
  • Private vehicles are not authorized to be used for any kind of commercial activity such as transporting goods or passengers for profit.
  • These vehicles are registered under the Motor Vehicles Act, 1988, and their ownership is linked to individuals or organizations for non-commercial use.
  • The main objective of this color scheme is to ensure easy identification of the vehicle type by law enforcement and regulatory authorities.
  • Examples include personal cars, motorbikes, and scooters used by individuals for everyday commuting.

Additional Information

  • Transport
  • A vehicle with a yellow license plate and black letters indicates that it is a commercial transport vehicle.
  • These vehicles are used for transportation of goods or passengers for commercial purposes.
  • Examples include taxis, buses, and trucks.
  • Electric
  • Vehicles with a green license plate represent electric vehicles (EVs).
  • Private electric vehicles have green plates with white letters, while commercial EVs have green plates with yellow letters.
  • This category was introduced to promote the use of environmentally friendly vehicles in line with the government's green energy initiatives.
  • Military
  • Military vehicles in India typically do not use the standard civilian color-coded license plate system.
  • These vehicles often have unique registration numbers starting with the letter "BA", which stands for Base Army.
  • The plates may also include symbols or insignias related to the armed forces.

Question 288

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

Cold temperatures ______ the air pressure in tyres while in summers heat __________ the pressure in tyres. 

  1. AOption (a)

    increase, decrease

  2. BOption (b)

    decrease, decrease

  3. COption (c)

    decrease, increase

  4. DOption (d)

    increase, increase

View answer & explanation

Correct answer

Answer: (c)C.

decrease, increase

Why this answer is correct

The correct answer is decrease, increase.

Key Points

  • Cold temperatures result in a decrease in air pressure in tyres. This is because, as the temperature drops, the air molecules inside the tyre move more slowly and occupy less space, which leads to reduced pressure.
  • On the other hand, during summers or in hot weather, the heat causes the air molecules to move faster and expand, leading to an increase in tyre pressure.
  • This phenomenon can be explained by the ideal gas law: PV = nRT, where pressure (P) is directly proportional to temperature (T) when the volume (V) is constant.
  • Maintaining proper tyre pressure is crucial for vehicle safety, fuel efficiency, and tyre longevity.
  • Under-inflated tyres (due to cold weather) can lead to poor handling, decreased fuel efficiency, and increased tyre wear.
  • Over-inflated tyres (due to hot weather) can reduce the tyre’s contact with the road, affecting grip and increasing the risk of a blowout.

Additional Information

  • Option 1: increase, decrease
  • This option incorrectly assumes that cold weather increases tyre pressure and hot weather decreases it, which contradicts the physical behavior of gases.
  • Option 2: decrease, decrease
  • While cold weather does decrease tyre pressure, hot weather actually increases it, making this option incorrect.
  • Option 4: increase, increase
  • This option suggests that both cold and hot weather increase tyre pressure, which is scientifically inaccurate.

Question 289

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

What is the colour of stop sign? 

  1. AOption (a)

    Yellow

  2. BOption (b)

    Red

  3. COption (c)

    Green

  4. DOption (d)

    Blue

View answer & explanation

Correct answer

Answer: (b)B.

Red

Why this answer is correct

The Correct answer is Red.

Key Points

  • The color red is universally recognized as a signal to stop or alert individuals to potential danger.
  • Stop signs are red because the color is highly visible and can be seen from a distance, even in low-light conditions.
  • Globally, most countries, including India, the USA, and the UK, use red for stop signs, adhering to international traffic regulations.
  • The use of red for stop signs was standardized in the 1920s, as it contrasts sharply with its surroundings and ensures that the sign is easily recognizable.
  • Red has psychological associations with warning, urgency, and immediacy, making it the ideal choice for a stop signal.
  • In traffic systems, red is part of a color-coding scheme where red means stop, yellow indicates caution, and green means go.
  • Stop signs are typically octagonal in shape, which, combined with the red color, helps drivers quickly identify their purpose.

Additional Information

  • Yellow
  • Yellow is used in traffic signals to indicate caution or warn drivers to slow down or prepare to stop.
  • Yellow is also used for warning signs, such as those indicating sharp turns, pedestrian crossings, or roadwork ahead.
  • It is less urgent than red but still commands attention due to its high visibility.
  • Green
  • Green in traffic systems is associated with permission or the signal to proceed.
  • It is commonly used for go signals in traffic lights and directional signs.
  • Green has a calming effect and encourages movement or progress.
  • Blue
  • Blue is often used in traffic signs to provide information or indicate facilities such as hospitals, rest areas, or parking spaces.
  • It is considered a neutral and non-threatening color in traffic systems.
  • Blue signs are particularly helpful for guidance and navigation.

Question 290

Delhi Police Driver 2022• Road Safety & Vehicle Maintenance

In the new BH series number plates, the first two digits indicate ____. 

  1. AOption (a)

    Last two digit of the year of manufacturing.

  2. BOption (b)

    First two digit of engine no. of vehicle

  3. COption (c)

    Last two digit of the year of registration

  4. DOption (d)

    First two digit of chassis no. of vehicle

View answer & explanation

Correct answer

Answer: (c)C.

Last two digit of the year of registration

Why this answer is correct

The Correct answer is Last two digit of the year of registration.

Key Points

  • The BH series number plates were introduced by the Government of India to streamline vehicle registration across states.
  • The first two digits of the BH series number plate represent the last two digits of the year of registration, helping to identify the year when the vehicle was registered.
  • It is a part of the Bharat Series (BH) registration system that eliminates the need for re-registration of vehicles when moving across states.
  • The BH series promotes seamless interstate movement and is designed for individuals with transferable jobs, such as government employees or private sector professionals.
  • The registration system is governed under the rules framed by the Ministry of Road Transport and Highways (MoRTH), Government of India.
  • The number plate format includes codes for the state of registration, the year of registration, and a unique alphanumeric identifier.
  • The scheme helps reduce administrative burdens and provides a simplified mechanism for vehicle owners.

Additional Information

  • Last two digit of the year of manufacturing
  • The year of manufacturing is used to identify when the vehicle was produced. However, this data is not relevant to the purpose of BH series number plates, which emphasize registration details rather than manufacturing information.
  • First two digit of engine number of vehicle
  • Engine numbers are unique identifiers for vehicles but are not part of the coding system used in the BH series registration plates.
  • Engine numbers are more commonly used for tracking and verifying vehicles in case of theft or maintenance.
  • First two digit of chassis number of vehicle
  • The chassis number is another unique identifier for vehicles, primarily used for tracking, verification, and production data.
  • It is not included in the format of the BH series number plates.