Road closures, heat to test driver patience Drivers are being urged to remain patient on the road while road closures, including the CityLink tunnels, are in effect. POLICE will be on alert for road rage incidents on Saturday as sweltering heat and road closures test driver patience. The Domain tunnel was shut off to traffic at 10pm on Friday night and will not reopen until New Year's Eve. VicRoads expects traffic to crawl on Saturday and Sunday at weekday peak hour speeds as drivers hit detour routes. Victoria Police Sergeant Sharon Darcy urged drivers to stay calm and map out their route before leaving home. "People need to remain patient and be courteous on the road," Sgt Darcy said. Drivers should plan ahead, consider alternative routes and allow extra time for travel. The temperature is set to hit 38 degrees on Saturday. Metro will run its trains to a summer timetable that has reduced services coinciding with major rail works. Unlike in early December, when it went to a "heat timetable" to reduce the speed of trains because of the heat, it won't be doing the same again. People heading to the MCG for the cricket are being urged to take public transport, with predictions that Punt Rd will resemble a carpark. Delays of up to one hour are expected as works begin on the tunnel. VicRoads said the hot conditions would also put strain on some vehicles and if there were breakdowns on the main detour routes, the traffic chaos would be even worse. But it is when the Burnley tunnel shuts from January 2 that gridlock will hit its peak. The inbound lanes of the West Gate Bridge will close at 11pm on Saturday night for eight hours and the outbound lanes will also shut from 11pm to 7am on Thursday and Friday.