Analysis of the control of vehicular atmospheric emissions in Metropolitan Lima

Abstract

Air quality in Lima is a widely discussed topic, particularly with regard to its close association with vehicle emissions. Consequently, a number of automobile control and prevention measures have been implemented, such as the national Vehicle Technical Inspection (VTI) system. The national VTI system determines which cars are suitable for safe driving, in compliance with certain conditions specified
by current regulations, while verifying that emissions levels do not exceed the maximum permissible limits. Thus, obtaining a vehicle inspection certificate (VTIC), authorizing the circulation of a vehicle, is now mandatory. Within the framework of new policies to improve air quality, the Metropolitan Municipality of Lima (MML) implemented an awareness campaign at ten locations throughout the city, with the aim of raising awareness among drivers of light vehicles regarding the importance of proper engine maintenance, in order to reduce vehicle emissions, as well as to measure those emissions. This research analyzes the data collected during that campaign, concluding that 79 % of the vehicles evaluated as part of the campaign were found to violate regulations, despite the fact that most of the vehicles had a valid VTI, thereby exposing the lack of veracity in the data gathered. Our research found that the parameter most frequently violated was the percentage of carbon monoxide and carbon dioxide, followed by the hydrocarbon parameter, a situation exposing the incomplete combustion of vehicle engines, giving rise to emissions of carbon monoxide and hydrocarbons.