If you can call their company and report the driving that would be good too. My dh drives a work van and ran a stop sign once (now to his credit they had just redid the streets and recently put up stop signs so he was not used to it being there) but there where no cars in his way (the one lady was at a another stop sign and she called his work number on the van and told them) my dh admitted his error he got lecture and is much more careful now.