This paper investigate the effect of the Delhi Metro, an intra-city mass rail transit system, on air pollution within Delhi. Finds strong evidence to show that it has resulted in reductions of two important vehicular emissions - nitrogen dioxide and carbon monoxide.

A developing economy like India is often characterised by a labour market with demand and supply of labour and a wage that even if competitively determined may not be adequate for the poor household to reach their target income; what they consider as means of a decent living.