In India most taxicabs, especially those in Delhi and Mumbai, have distinctive black and yellow liveries with the bottom half painted black and upper half painted yellow. In Kolkata, most taxis are painted yellow with a blue strip in the middle. Private companies operating taxis can have their own liveries but need to get them approved from the government.
Taxis and all other commercial vehicles have a yellow number plate so charging taxes and toll in highways is easier for the officials. Delhi is the only city in India with taxicabs running only on Compressed Natural Gas. To hail a taxicab, you normally just wait on the street or go to locations called taxi stands. Taxicabs are referred to as taxis in India and the word cab is rarely used.