LARSOA says that putting the clocks back last weekend will cost more than 100 lives on UK roads between now and April 2008.
Both LARSOA and RoSPA have been campaigning for some while to move time forward throughout the year so there is an extra hour of daylight during the afternoon in winter months.
The Association says research proves many lives could be saved and injuries prevented by allowing an extra hour of daylight when people are returning from school and work.
David Frost, LARSOA spokesperson, says: “There could be as many as 104 fewer deaths each year. The figures also show that there would around 450 fewer serious injuries on the roads.
“By introducing the system of Double British Summertime, the government could go a long way to hitting its target of reducing deaths and serious injuries by 40% by 2010.
“Extra daylight on winter afternoons would protect the most vulnerable road users - cyclists and pedestrians such as children and the elderly - who are often afraid of being out after dark.
“Last year 169 children died on the roads and the combined numbers of those killed and seriously injured was 3,294 – that’s nine children seriously hurt or killed every day.”
Meanwhile, RoSPA urged road users to take extra care as the nights draw in - but also to press politicians to introduce a system that would bring lighter evenings all year round.
Kevin Clinton, head of road safety, said: "Road accident rates rise after the clocks change and visibility and weather conditions begin to worsen. Ideally, we would like the government to agree to a three-year time trial to prove the road safety arguments.”