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the best way to control pollution from vehicles are :
1. we have to attach silencers to the vehicles so that they wont make much sound pollution.

2.  instead of using petrol that causes much pollution, we have to use CNG  (compressed natural gas ) so that I wont make much pollution.

3. we have to use public transport so that we wont use many vehicles that cause much pollution. 

hope so my answer is useful and if you like it please do mark it s best  
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