Application of intervention analysis for assessing the effectiveness of COpollution control legislation in India

An Intervention Analysis Model (IAM) (Box and Tiao, 1975) was developed to study the impact of the 'intervention' brought in by the Government of Indi a (GoI), to control the CO pollution caused by the vehicular exhaust emissi ons, by the enforcement of the emission standards for the vehicles, on the mean level of the time-series of CO concentration. The study was conducted for an Air Quality Control Region (AQCR) comprising of an urban road inters ection in Delhi, India, where almost 100% CO is contributed by vehicular tr affic. Application of the model suggests that the 'intervention' has not be en effective in bringing down the desired change; some likely causes of whi ch have also been mentioned. (C) 1999 Elsevier Science Ltd. All rights rese rved.