The failure is due partly to corrupt practices of officials responsible for enforcing the laws. The difficulty in enforcing road worthiness regulations also arises from the fact that since the economic Structural Adjustment program (SAP) that began in the 1980s and caused devaluation of the Nigerian currency, Nigerians could no longer afford to import brand news cars and the country became dumping ground for used vehicles in poor conditions from other countries.
The Lagos State Environmental Protection agency
recently said that emissions from the exhaust of vehicles pose significant health hazards to Nigerians. According to the Lagos State Emergency Management Agency (LASEMA)
, automobiles are the largest source of air pollution in Lagos State. The agency estimated that exhaust fumes account for two-thirds of carbon monoxide, a third of nitrogen oxides and quarter of the hydrocarbons in Lagos.
In Ibadan, cab and minibus drivers are the worst offenders. Failure to enforce road worthiness regulations in Oyo State, of which Ibadan is capital, encourages cab and commercial mini bus drivers to act with impunity. The automobiles many of them place on the roads just manage to keep wobbling along on busy streets emitting dense clouds of smoke and wailing engine noises that force other drivers to give way. But what any casual observer will notice is the Buddha-like serenity of the drivers as they pass with thick billows of smoke trailing them.