KARACHI - The public transport is releasing over 175,000 tonnes of different toxic gases in the metropolitan, The Nation has learnt through survey reports collected from different sources on Sunday. As per detail, despite making several efforts, the authorities concerned failed to control the air and noise pollution in the major cities of the country particularly Karachi; the metropolitan is still suffering from such chronic problems. It was learnt that the government and the other agencies were unable to address the said matter to control or diminish the air pollution in the urban parts of the country. It is criminal negligence of the local government and other organisations towards the control of smoke emitting vehicles that a large number of vehicles that do not meet the criteria of fitness are seen plying on roads. The survey report collected by the joint committee comprised by different universities and private institutions has termed such situation as the negligence of the concerned authorities. The survey also revealed that the two-stroke engine vehicles contributed major share of air pollution, these vehicles account for about sixty percent of the motor vehicle, resulting in adverse health effects, particularly for urban dwellers. Such vehicles caused hydrocarbon emissions, besides visible smoke. The poor vehicle maintenance, misuse of lubricants and adulteration of gasoline exacerbate emissions from these vehicles. Emissions from having 2-stroke gasoline engines can be reduced by using the correct type and quantity of lubricant, improving vehicle maintenance, and improving the quality of gasoline. For new vehicles, redesigning 2-stroke engines to decrease scavenging losses, and installing catalytic converters to reduce tailpipe emissions can reduce emissions. Some of these measures can be achieved through regulation, while others require mass education of drivers, vehicle owners, regulators, and the public at large. Other technical options include replacing the 2-stroke engine by 4-stroke gasoline engine and switching to cleaner alternative fuels such as liquefied petroleum gas, compressed natural gas, and electricity. This paper discusses various technical and supporting policy options for reducing emissions from two-stroke engines. On the other side, Environmental Law Agency, a private organisation had moved the high court of Sindh against the air and noise pollution in the metropolitan. It was mentioned in the court that approximately 0.2 million, eight thousands, eight hundred and sixty one public vehicles are operating in the city. The vehicles comprised thirty four thousands nine hundred and fifty nine rickshaws, three thousands, six hundred and sixty five buses, ten thousands and seven hundred mini buses, two thousands, three hundred and twenty four contract career, four thousands, three hundred and twenty one mini coaches, forty nine thousands, three hundred and ninety six pickup vehicles, forty nine thousands, three hundred and ninety six taxis, while forty five thousands nine hundred and seventy two privet vehicles are operating across the city. The governments institutions have experts and technical staffs with proper equipment to tackle the situation, while they have also given free hand to the owners of these vehicles, but they avoid the situation.