CSE EXAM ( UPSC prelims mains) CAPF

🔆Environmental Impact of Electric Vehicles (EVs)

✅ Climate Benefit of EVs:
• EVs help eliminate greenhouse gas emissions, playing a crucial role against climate change.

✅ Air Pollution Concern:
• Recent study shows EVs may worsen air pollution due to increased tyre wear from their greater weight.

✅ Study Details:
• Conducted by TIFR, IIT Bombay, and a US university.
• Established how vehicle weight and speed affect the size of plastic particles released from tyre wear.

✅ Tyre Particle Pollution:
• Tyre wear emits microplastic and nanoplastic particles into the air.
• Two degradation types:
• Primary fragmentation: Larger particles from sudden braking or potholes.
• Sequential fragmentation: Smaller airborne particles from prolonged use and friction.

✅ Heavier Vehicles, Higher Emissions:
• EVs are 15–20% heavier (300–900 kg batteries) than petrol/diesel cars.
• Faster acceleration causes more tyre stress, friction, and heat.
• Heavier, faster vehicles release more and smaller airborne particles, increasing pollution.

✅ Global Implications:
• With EV sales at 20% globally in 2024, this pollution concern is worldwide.
• Calls for revisiting assumptions on EVs’ environmental friendliness.

✅ Policy and Technological Responses:
• Current air quality norms (PM2.5, PM10) don’t cover fine tyre particles—standards need updating.
• R&D needed for tyres suited to heavier EVs.
• Possible solutions include:
• Capturing tyre particles at release points.
• Improving road quality to reduce fragmentation.

#environment #EVs

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4.4K viewsJun 7 at 18:10

🔆Environmental Impact of Electric Vehicles (EVs)

✅ Climate Benefit of EVs:
• EVs help eliminate greenhouse gas emissions, playing a crucial role against climate change.

✅ Air Pollution Concern:
• Recent study shows EVs may worsen air pollution due to increased tyre wear from their greater weight.

✅ Study Details:
• Conducted by TIFR, IIT Bombay, and a US university.
• Established how vehicle weight and speed affect the size of plastic particles released from tyre wear.

✅ Tyre Particle Pollution:
• Tyre wear emits microplastic and nanoplastic particles into the air.
• Two degradation types:
• Primary fragmentation: Larger particles from sudden braking or potholes.
• Sequential fragmentation: Smaller airborne particles from prolonged use and friction.

✅ Heavier Vehicles, Higher Emissions:
• EVs are 15–20% heavier (300–900 kg batteries) than petrol/diesel cars.
• Faster acceleration causes more tyre stress, friction, and heat.
• Heavier, faster vehicles release more and smaller airborne particles, increasing pollution.

✅ Global Implications:
• With EV sales at 20% globally in 2024, this pollution concern is worldwide.
• Calls for revisiting assumptions on EVs’ environmental friendliness.

✅ Policy and Technological Responses:
• Current air quality norms (PM2.5, PM10) don’t cover fine tyre particles—standards need updating.
• R&D needed for tyres suited to heavier EVs.
• Possible solutions include:
• Capturing tyre particles at release points.
• Improving road quality to reduce fragmentation.

#environment #EVs

BY CSE EXAM ( UPSC prelims mains) CAPF