After drawing flak for three weeks in the bus gang-rape case for failing to prosecute the rogue bus for having visibly 'black' glasses, the traffic police have now taken the ingenious plea that the bus windows were not tinted with film but their glass itself was dark. They claim that to check the glass violated opacity limits set in the motor vehicles act - 70% visual transmission of light through windscreen and rear window, and 50% through side windows - they need a device called 'lux meter', which they have not been able to get despite making strenuous efforts over five years.
"In the last five years, tenders have been floated at least thrice for such lux-meters. Despite international agencies participating in them, lux-meters of specified parameters have not been made available for sale. All tests we have carried out have failed even though representatives of international organizations have taken part and not succeeded," said a senior traffic police officer.
This sounds surprising, because Delhi Police's counterparts across the border, Noida police, have 10 such lux meters available with them. "We have 10 such lux-meters that are functional," confirmed a senior Noida traffic police officer. Chandigarh Police too got five last year. A lux meter is not a uranium centrifuge subject to international sanctions. In fact, cheap apps now allow the cameras on Android and Apple phones to be used as light meters. But even the brand/ model used by Chandigarh Police - German-made Mastech MS 6610 - is available for less than Rs 2,500 online. That's small change for Delhi Police which collects crores of rupees in fines every year.
How did Chandigarh Police get the calibration of their meters certified? They simply took the devices to a CSIR lab called Central Scientific Instruments Organization in their city and got them tested. The lab, which does work for ISRO and the country's armed forces, is five hours away by road from Delhi, if the police are interested.
Delhi Police's embarrassing position with regard to light metering was exposed recently when a Haryana Roadways bus (HR 55 Q 5302) was intercepted at Kashmere Gate. The police team initially looked for removable film on the windows but found none. Then they set out on a wild goose chase.
The report compiled by the traffic inspector of Civil Lines traffic circle states that the bus was first taken to the National Institute of Criminology and Forensic Sciences on Wednesday, but the institute did not have a testing facility. The bus was then taken to Delhi government's Forensic Sciences Laboratory in Rohini Sector 14, which also did not have equipment to test transparency. Finally, it was taken to the Shriram Institute for Industrial Research near Delhi University, to no avail.
Police eventually had to let the bus go on the owner's undertaking to send documents recording the transparency of its windows, a source said. Even last week, a bus stopped by some AIIMS students had to be released as its glass was found tinted, not pasted with film.
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