Incidents of stones, eggs and bricks being thrown at vehicles on the A340 in Aldermaston have been reported for a fifth time.
The latest report came on April 30, however it also happened on March 15, and each day between April 26 and 28.
No motorists have been injured in any of the incidents, but it has caused damage to some vehicles including smashed windows.
They all happened on the stretch of the A340 between Youngs Industrial Estate and Calleva Park.
Youths between the ages of 12 and 17 were seen in the location at the time.
Anyone with information is asked to contact police on the non-emergency number 101.