India, June 12 -- The BEST's answer to keeping tabs on drivers of its wet-lease buses is simple: observe them undercover.

In the aftermath of Monday's accident at Dadar, in which suspected driver error claimed one life, the transport undertaking has begun deploying teams of officers and senior staff in plainclothes to travel on buses and discreetly monitor driver behaviour.

If a driver is found violating any of the guidelines issued by the undertaking, the observers will document the lapse and submit a report. The BEST administration believes these surprise inspections will get drivers to stay alert and disciplined behind the wheel, thereby making bus travel safer for passengers.

Plainclothes officers and senior staff from all 27 depot...