Police are looking for information about the drivers of two vehicles which clashed on the A17 in Long Sutton.
A blue Renault van and a blue Ford Focus ran into each other a number of times before the van left the road and ended up in a dyke.
It happened at about 4.50pm last Friday and the road was closed for a time as the vehicles were recovered, but neither driver was hurt.
Anyone with information should call PC Darren Enderby at Holbeach Police Station on 101, quoting incident number 369 of November 2.