The New Zealand Transport Agency is leading research into measures to increase road safety in relation to tourists.

Over the Queen’s Birthday weekend, four of the five people killed on the roads apparently died as a result of driving errors by overseas visitors.

That has reignited calls for compulsory tests for tourists before they are allowed to drive in New Zealand.

The Transport Agency’s research is being conducted in collaboration with the Police, ACC, local government leaders and the Ministry of Transport.

It is looking specifically at crashes involving visiting drivers – whether from overseas or a even just different region in New Zealand.

The agency’s safety manager Lisa Rossiter said one of the focuses of the research was the types of vehicles tourists were driving.

She said studies showed that in the South Island, half the visitors who rented campervans had never driven one before, so voluntary driver training may have to be introduced.

Rossiter said another solution being researched was road signage aimed at visiting drivers.

The police believe that despite four of the five road deaths over the long weekend being linked to foreign drivers, much is already being done to educate tourists about driving in New Zealand.

The assistant commissioner of road policing, Dave Cliff, told RNZI’s Morning Report that while every death is a tragedy, only two percent of fatal crashes are caused by tourists.

“All rental car agencies have literature provided by the NZTA and are asked to brief overseas drivers before they get behind the wheel.

“If driving on South Island roads you might have noticed there are arrows after things like rest areas and one way bridges which remind drivers to get back onto the right side of the road.”

Cliff is hoping extra speed cameras and a lower blood alcohol limit will reduce the overall number of road fatalities.

Colin and Maryke McIver travelled from Taranaki to Wellington over the weekend in their seven-metre long campervan.

They were adamant there should be testing of tourists.

McIver, is a truck driver by day, and said he has witnessed some very risky driving by tourists.

He said often tourists drove campervans in the middle of the road rather than staying left, which was very worrying.

His wife said she believed there wasn’t enough signage on the roads and what was there wasn’t good enough.

She said she saw arrows on the roads at Coromandel but said they were too close together and probably confusing for tourists.

But some tourists said having to sit a test would be a reason not to visit this country.

Patrick Schelbli and his partner, from Sweden, were travelling the length of the country in a large campervan.

Schelbli said it was their first trip here and he would be reluctant to visit again if he had to sit the test for a New Zealand drivers licence, especially if it was for both a car and campervan.

But the editor of a car review website said tourists must prove they have at least some knowledge of New Zealand road conditions and rules.

Clive Matthew-Wilson said doing nothing will cost more lives. A full licence test was not necessary but at the least an interactive on-line test would work out whether a tourist had any knowledge of the New Zealand roading system and laws, he said.

If they don’t, then they should not be behind the wheel of a car or campervan, he said.

Prime Minister John Key, who was in Samoa, said the accident rate per capita was about the same for New Zealand drivers and those from overseas, and he didn’t think testing was needed.

The government preferred to work with rental companies and airlines, which were already playing a proactive role in giving tourists better information about driving in New Zealand, he said.