First practice for the Singapore Grand Prix has been delayed for 30 minutes because of track repairs required to the Marina Bay circuit.
Earlier running of the Porsche Carrera Cup Asia had highlighted a problem with some of the plastic exit curbs working loose at Turns 3 and 14, which has required attention from race organizers. FIA safety representatives Charlie Whiting and Herbie Blash were seen attending to the curbs ahead of the scheduled start time, with some sections of the curbing being removed entirely.