Matt Rilkoff/Stuff Commuter traffic is in gridlock throughout New Plymouth following a crash at the intersection of Mangorei and Northgate on Tuesday afternoon. Traffic in New Plymouth was brought to a standstill after a car hit a lamppost at the city’s northern entrance on Tuesday. The crash happened at the intersection of Northgate and Mangorei Rd just before 4pm and created gridlock chaos throughout the city for the third time in two months. SIMON O'CONNOR/Stuff A vehicle crashed into a light pole at the intersection of Northgate and Mangorei Rd on Tuesday afternoon. Senior Constable Vaughan Smith said the cause of the crash remained under investigation.