Drivers have been urged to keep the windscreen of their car clean, after research revealed that glare from the sun caused a huge number of injury crashes last year.
The Institute of Advanced Motorists (IAM) warned that glare can result in more dangers, compared with driving at night or in bad weather.
Figures released by the Government showed the sun led to 2,684 injury crashes in 2009. This is equal to the number of crashes caused by headlamp dazzle and bad weather taken together.
The charity added that rush-hour drivers would have to face the dazzle of the low sun, after the clock change on Sunday.
But by taking simple steps, motorists can avoid the risk of crashes as well as car insurance claims.
Neil Greig, IAM director of policy and research, said: "We can't change the position of the sun, or the need to travel at certain times, but there are simple steps you can take to ensure you're prepared for these conditions.
"Keep your windscreen clean, both inside and out. On de-mist, your heater blows traffic fumes, suspended oil and smoke onto the inside of the screen, and wet roads add dirt and scratches to the outside.
"Dirty windscreens add to the danger when the sun is low. If you can't see, slow down accordingly, keeping an eye on the traffic behind, in case the following vehicle doesn't see you against the sun."
© Press Association 2010