Mumbai, Sept. 27 -- The 15 lakh-odd passengers on the CSMT-Panvel Harbour line and the Thane-Vashi Trans-harbour network of the Central Railway (CR) can now heave a sigh of relief as the authorities are on the last leg of upgrading the rail tracks that will augment permissible speeds of local trains from 80 kmph to 105 kmph, reducing the travel time. The work started earlier this year....