PUC Tests in Delhi-NCR to Become Tamper-Proof; No More Manipulation Possible

New tamper-proof technology is being introduced for PUC (Pollution Under Control) testing in the Delhi-NCR region. Test readings will be transmitted directly to a government server, making any form of tampering extremely difficult. Let’s look at how this system will work.

In Delhi-NCR, obtaining a PUC certificate for a vehicle will no longer rely solely on the readings displayed on a machine. The government is implementing a new technology designed to prevent the manipulation of test results. Specifically, the emission data recorded by the testing equipment will be sent directly to a government server. Staff at PUC centers—and the computers they use—will no longer have the ability to alter this data.

This new system will debut in Delhi-NCR before being rolled out across the rest of the country. The government’s objective is to enhance the reliability of PUC testing and eliminate the possibility of issuing fraudulent certificates.

Will a Security Chip Be Installed in the Testing Equipment?

Under this new system, a specialized security chip—known as TPM 2.0—will be integrated into the machines used to test petrol and diesel vehicles. This chip will digitally sign the data from every test.

Essentially, when a vehicle’s emissions are tested, the results will be tagged with a unique digital signature. The machine will then transmit this data directly to the government’s PUC server via its built-in SIM or eSIM connection. Consequently, the computer at the PUC center will serve only to input vehicle details, initiate the test, and print the certificate; it will not be able to alter the actual test readings generated by the equipment.

What Happens If Someone Attempts to Tamper with the Machine?

The new regulations also enforce strict security measures for the testing equipment. If anyone attempts to open the machine without authorization, modify its software, or manipulate the readings through external commands, the device will trigger an alert.

In such an event, the machine will immediately halt further testing and digital signing. Before any subsequent testing can take place, the equipment will need to undergo a formal inspection and verification process. Furthermore, the machine's live readings will not be displayed on the screen during the test. This will make it difficult for the operator to manipulate the data while the test is in progress. According to the new standards, if the oxygen level recorded during the test is 5% or higher, the test must be cancelled and repeated.

How long will the PUC test take?

The new system also proposes stricter testing procedures. Each test will last for at least 60 seconds. The final result will be determined by calculating the average of the readings recorded during the last 10 seconds. Every valid test record—whether the vehicle passes or fails—must now be uploaded to a government server. This will prevent the concealment of failure records or the fraudulent marking of a vehicle as 'passed' without a proper inspection.

Where will this system be implemented?

The government will first implement this technology at PUC centres in the Delhi-NCR region. Initial testing has already commenced at select centres. Subsequently, it will be rolled out to other cities and areas covered under the NCAP (National Clean Air Programme).