He said it was "another needless tragedy on our roads".
"Unfortunately tonight it looks as though someone has lost their life needlessly on our roads. It's very early days at the moment, and our Serious Crash Unit are on the scene looking into what's happened.
"The message to drivers going through roadworks would be that the speed limits that are posted are there for a reason. Driving on loose gravel like this - you really need to reduce your speed."
An image of the white car showed it had come to a stop several metres from the fence, and what appeared to be a piece of farm fence protruding out of the driver-side door.
A police spokesman was unable to confirm any further details this morning.