About one-third of Sydney residents are now using the ride-sharing service Uber, but there has been no drop in business for the city's taxis, a survey shows.

Instead, Uber appears to be capitalising on increasing amount of trips taken in Sydney using so-called point-to-point transport.

In a survey of more than 2000 Sydneysiders in November 2016, 33 per cent said they had used a ride-sharing service such as Uber, GoCar or GoBuggy in the previous six months, according to a new report for the Independent Pricing and Regulatory Tribunal.

The result was up from 19 per cent in 2015 and 11 per cent in 2014.