Police have closed Arthur Porter Drive in Hamilton following a serious two vehicle crash.

Police were first informed of the crash between a dirt bike and truck at 5.15pm.

Police have closed State Highway 29 near Karapiro following a single vehicle crash.

Police were first made aware of the crash at approximately 4.50pm.

Motorists are advised to expect delays following a vehicle fire on SH1, Penrose this afternoon. 

Emergency services were alerted at around 4.25pm.