Truck rollover clogs Stirling Highway in North Fremantle The truck, which has flipped over at the intersection of John Street about 6.20am, is affecting southbound traffic on Stirling Highway, with northbound traffic able to pass the incident. Southbound traffic is being diverted onto Queen Victoria Street. Emergency services are on site. There is congestion as a result of the accident and road users are advised to seek alternative routes if possible.