Launching the fleet of 50 such new taxis in Kasba area, West Bengal Transport minister Madan Mitra said the cabs would be beneficial for both drivers and passengers.
The state transport ministry had earlier decided to change the colour of taxis in the metropolis from yellow to white with a blue band.
"Passengers would benefit because there would be no refusal from these taxis and drivers would be automatically protected from police action," Mitra said.
He also announced that his ministry sanctioned Rs 5 crore for building new taxi stands in the metropolis.