Taxi drivers sit in their parked cars as they take part in a protest on a road near the government offices in Hong Kong on March 17, 2017.

Mainland ride-hailing giant Didi Chuxing and Hong Kong transport firms Kwoon Chung Bus and Sun Bus are seeking to enter the city's premium taxi market while the trade itself is boycotting the government's plan to start franchised services, according to sources.

Industry players also warned that a proposed five-year trial scheme to provide a better service for the public, subject to Legislative Council approval, might never take off due to insufficient support from lawmakers.