ComfortDelGro Corp, Singapore's dominant transport operator, confirmed on Tuesday that it had no current plans to raise taxi rentals.

Tammy Tan, a spokesperson for ComfortDelGro, described that the move as a part of its overall fare structure revision. The spokesperson also cited rising demand for transport services in the state.

Making the announcement, Tan stated, "There are currently no plans to increase rental and we continue to subsidise diesel to our cabbies."

The news of the impending fare increases encouraged investors to push shares in ComfortDelGro up in the early Tuesday trading, despite drop in the broader market.

Last time the leading transport operator had adjusted taxi fares in December 2007.

ComfortDelGro also announced that the introduction of SMS and smartphone taxi-booking services had provided a great boost to taxi-booking demand.

ComfortDelGro is receiving 2.4 million taxi-bookings demands per month, up 47 per cent from the year of 2007.

CityCab and Comfort Transportation, the two taxi companies owned by ComfortDelGro, operate a fleet of more than 15,700 taxis in the city-state.