Gautrain services will run on a new timetable by the end of the week, the Bombela Concession company said on Tuesday.
"The new timetable is designed to provide more peak-time train capacity during weekdays and more time to change between the north-south line and the east-west line at Marlboro station," spokeswoman Kelebogile Machaka said in a statement.
The timetable would come into effect on Thursday.
Machaka said Gautrain had implemented several "service enhancements" after receiving feedback from commuters.
These included airport trains direct from Marlboro, a simplified fare structure, reduced parking fees and discounted fares for regular users.
It had also set up a security hotline, an sms service for updates and an application for smart phones.