There were 104 fatal and serious accidents in Powys last year
An MP is demanding action to tackle the number of people killed and seriously injured in road crashes in Powys.
Brecon and Radnorshire MP Roger Williams said there were more fatal and serious accidents in the county in 2008 than anywhere else in Wales.
Figures show Powys topping a Welsh road crash league table for six years.
The assembly government said road casualties showed a drop of 13% from last year in Powys and reducing the number across Wales was a "priority".
Mr Williams pointed to statistics which showed there were 1,190 fatal and serious road incidents in Wales last year, a decrease of more than 400 on the average for 1994-98.
The majority of casualties involved people aged between 16 and 24, the assembly government statistics show.
The number of fatal and serious accidents in Powys was 104 in 2008, a reduction of two on 2007 and a fall of 27 on the 1994-98 average.
The figures are falling, but Liberal Democrat MP Mr Williams said more work was needed to hasten the decline.
He added: "The tragedy of young people being killed on our roads cannot be solved simply by making driving tests more and more difficult.
"Instead the government needs to ensure that transport policy takes into account the changing way in which our roads are used and work to make the roads, not just the drivers safer.
"Here in Powys we have some very difficult and complicated roads which even experienced drivers can find treacherous in poor conditions. These roads are even more dangerous for people on motorbikes."
He said new technology applied to safety features could cut the number of not just young people, but of all road users who are killed or injured each year.
A Welsh Assembly Government spokesman said reducing road casualties in all parts of Wales was a priority.
"Figures show that all road casualties were down by 9% in Wales over the last year and earlier this year the Institute of Advanced Motorists recognised Wales as having the best road safety record in the UK," he said.
"In Powys, road casualties show a decrease of 13% from last year and a 5% decrease in motorcycle casualties."
But the spokesman said there was more to be done and "we continue to develop and implement road safety measures on our trunk road network" and provide grants to councils to reduce casualties.