Pollution tests are a joke in Nepal. While the government standards for carbon monoxide by volume emissions for three-wheelers is three, the company standard is four-and-a- half. Effectively, this should put all three-wheelers off the roads, but this is not so. Quite simply, bribery rules the day. Romendra Singh Deuja, a divisional superintendent of police in charge of the emission tests by traffic police, admits to several cases where bribes were attempted to obtain the green sticker. Meanwhile, three-wheeler owners are protesting the stringent government standard and say it is too high.