Emergency vehicles are automatically turning Brisbane's lights green to enable them to get to their destinations up to 26 per cent quicker.

The technology has been rolled out across 13 Brisbane road corridors at a cost of $1.1 million, jointly funded by Brisbane City Council and the Queensland state government.

Lord Mayor Graham Quirk said the technology could shave almost 30 seconds off an emergency vehicle's travel time, a relatively small amount of time that could have life-saving ramifications.

"In an emergency, every second counts and this priority emergency technology is about making sure we see emergency vehicles, be they ambulances or fire and rescue vehicles, get to where they need to go quickly," he said.