Grab will be introducing a public transport planner feature allowing users to see travel options which include buses and trains.
Grab users were experiencing problems on Wednesday morning while trying to book a ride on the platform's mobile application.
The Land Transport Authority has received about 39,000 applications for the Private Hire Car Driver's Vocational Licence as of 21st June.
About 5,000 drivers have applied for the Private Hire Car Driver's Vocational Licence so far since 13th March, according to the Land Transport Authority.
The number of taxi-driving licenses falls 12.4 percent in two years, with competition from transportation network companies like Uber and Grab.
Higher-end limousine rides are growing in popularity as more Singaporeans turn to apps to get a taxi, say app providers such as Uber Black and GrabCar.