Public transport advocates have hailed Monday's introduction of 200 extra rail services in Queensland's south east as a revolution in the state's train travel.

The extra Translink services will mean 15-minute frequency on many suburban rail lines, hauling Brisbane and the south east's public transport network into line with many other Australian cities.

Commuter advocacy groups have regularly pointed to lack of frequency as a key factor discouraging people from using Brisbane's network of trains and buses.

Queensland transport minister Scott Emerson said the new timetables would provide more consistency.

“With better planning we are able to deliver better front-line services with an additional 16 morning peak services and 17 more afternoon peak services,” he said.