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Police will again enforce a reduction of the national speed tolerance from 10kmh to 4kmh this holiday weekend, in a bid to keep the number of fatal and injury crashes down.
Labour Weekend was the first time many people could get away after winter and the roads would be full of people towing boats and caravans, Southern district road policing manager Inspector Andrew Burns said.
"This can create added hazards on the roads where slower towing vehicles are on the road."
Drivers of towing vehicles needed to keep an eye on what was happening behind them to ensure vehicles were not backed up, and take every opportunity to pull over and let traffic pass.
"This will reduce frustration and allow the traffic to flow."
Police would enforce a reduction of the national speed tolerance from 10kmh to 4kmh and target drink-driving, those failing to keep left and those driving too fast for the conditions.
The aim was to have no fatal or injury crashes over the weekend and build on the success of similar measures enforced at Queen's Birthday weekend, said Insp Burns.
The MetService is forecasting a mainly fine day on Saturday, with patchy drizzle about the fiords deteriorating to rain on Sunday with a few brief falls further east.
Cloudy periods are forecast to continue into Monday, with rain or showers in Fiordland and brief rain further east in the far south.