Boy, 16, dies after car crashes into tree at Lake Plains on Easter Sunday

Police say Lake Plains Road will be closed for several hours on Easter Sunday. (ABC News)

A boy, 16, has died after the car he was driving crashed into a tree south of Adelaide.

SA Police said emergency services were called to Lake Plains Road at Lake Plains, about 64 kilometres south of Adelaide, about 2:35am on Sunday after reports a car had crashed into a tree.

The young Strathalbyn man, the driver of a Honda station wagon, died at the scene.

Police say the car struck a tree in the early hours of Easter Sunday. (ABC News)

SA Police said Lake Plains Road would be closed for all traffic between Taverner Road and Borrett Road for several hours.

There have now been 43 lives lost on South Australian roads this year, compared to 20 at the same time last year.

On Friday, an 88-year-old Campbelltown woman died from injuries sustained in a three-car crash in West Lakes Shore on March 31.

A new, fast-tracked road safety campaign was launched last month in a bid to improve driver behaviour after a horror start to the year's road toll.