Labs not afraid of vehicles

[Kfamr]

Move the fence so that it does no go in the path of the vehicles.

[bckrazy]

Move the fence, build a run when for when you can't supervise them, and/or keep them indoors when you aren't outside or when you aren't home.

Really, we have had one PT member in a similar situation, with dogs that didn't pay attention to cars, and one of her girls was run over by a car (she's fine, thankfully). It would be HORRIBLE if that happened to one of your pups!