A woman has died after being hit by a car while on a pedestrian crossing.

The 80-year-old was believed to be crossing from east to west when she was struck in Ngaruawahia this morning.

She died in Waikato Hospital.

"The crash is still under investigation by the Waikato Serious Crash Unit so it is too early to say what caused the incident," District Road Policing Manager, Inspector Freda Grace, said.


"We don't believe speed or alcohol were factors in the crash and the 37-year-old male driver stopped at the scene and is cooperating with police.

"At this stage it appears this is a tragedy for all concerned and we would like to express our sympathies to the dead woman's family for their loss."

Mrs Grace said this latest incident was the fourth pedestrian fatality in Waikato this year, and the second on a pedestrian crossing.

With bad weather forecast in the coming days and extremely heavy traffic flows for the National Fieldays that start tomorrow, Waikato police were urging motorists to ensure they remained alert.

"We're asking motorists that before they hit the road in heavy Fieldays traffic this week, do a TWIRL- that's check your Tyres, Windscreen, Indicators, look for any Rust and make sure your Lights are working properly.

Cyclists and pedestrians could do their part as well, Mrs Grace said.

"Ensure if you're on a bike motorists can see you, make sure you have a good lights front and rear and that you're wearing reflective clothing.

"Pedestrians and joggers are asked to do the same; it's hard to share the road if you can't see the other bloke on it."

Mrs Grace said making sure your car was registered and had an up-to-date Warrant of Fitness showing the vehicle was fit to be on the road.

"This week is probably the busiest period on Waikato roads of the year and the forecast is for rain and poor visibility.

"So make sure you're at your best -- well rested, not under the influence of alcohol and be prepared to have a bit of patience and we'll all get to where we're going in one piece ... "