The first passenger train ran on Konkan railway tracks in which year between Udupi and Mangalore ........

Explanation:

The Konkan Railway is a railway operated by the Konkan Railway Corporation, with its headquarters at CBD Belapur in Navi Mumbai, Maharashtra, India. The first passenger train ran on Konkan railway tracks on 20 March 1993, between Udupi and Mangalore. During its initial years of operation in the mountainous Konkan region, a number of accidents prompted Konkan Railway to implement new technology.