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    Pollution Under Control (PUC) Certificate

    The smoke that emits from the vehicles have a chance of polluting the air if left unchecked. PUC or the Pollution Under Control certificate is provided to the vehicles after they take the Pollution Under Control test. The certificate is an indicator to the vehicle following the standard rules set by the government to control pollution. It is mandatory for all vehicles plying on the Indian roads to carry a legitimate PUC certificate.

    PUC Certificate

    PUC testing is done at any of the independent testing centres or authorised petrol pumps. The certificates are also issued at the centre after the test.

    A PUC certificate will contain the following information:

    • The certificate’s serial number
    • The registration number of the vehicle
    • The date of PUC testing
    • The PUC certificates date of expiry
    • The PUC readings from the test

    A PUC certificate is a vital document that should be carried at all times while driving your car. You should be able to produce a valid PUC certificate when requested by a traffic official, in case you are unable to produce the same, you will be charged with penalty.

    In case you do not hold a valid PUC certificate, you will then be fined Rs.1,000 for the first-time offense and Rs.2,000 for every offense thereafter as per the Motor Vehicles Act.

    In case you do hold a valid PUC certificate but the emission from your vehicle is high, your PUC certificate will be cancelled if caught by the traffic official and you will be requested to get a new PUC certificate within a week. If you fail to do so, you will have to bear the set penalties under the Motor Vehicles Act.

    Validity and Cost

    A PUC certificate for a new car is provided at the time of its purchase and is valid for a year. After the first year is over, you need to get the PUC test done for your car at regular intervals. Every time you have your vehicle undergo the PUC test, a new PUC certificate will be issued each time.The new certificate is valid for 6 months only, hence it is mandatory to get your vehicle take the PUC test every 6 months.

    In cases where the PUC test shows adverse results for a vehicle, the certificate validity will vary on the basis of the reading. During the PUC test if any cars show a higher level of emission that is more than the prescribed limit, the agent conducting the PUC test will notify the RTO or Deputy RTO or Assistant RTO and provide them with the car’s registration number within 24 hours of taking the test.

    A PUC test costs very less, the cost varies anywhere between Rs.60 to Rs.100. The cost of PUC test depends on the vehicle being tested and its fuel type.

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    PUC Test Procedure

    • When it comes to PUC testing of diesel cars, the accelerator of the car is completely pressed to get an accurate reading on the level of emission. This procedure is repeated five times, and each time the reading is noted down, then the average of these readings are taken as the final reading.
    • When it comes to PUC testing of petrol vehicles, the car is switched on and the engine is kept running without applying the accelerator. This process is done only once and an accurate reading is noted as the final reading.

    Test Criteria and Certificate

    • All the cars undergoing the PUC test should fall within the following limits:
    Vehicle Type Percentage of CO Hydrocarbon measured in ppm
    4 wheelers that are manufactured as per the Pre Bharat Stage II Norms 3% 1500 ppm
    4 wheelers that are manufactured as per the Pre Bharat Stage II, Stage III or subsequent Norms 0.5% 750 ppm