The folks in the Ivory Towers came up with this little gem as a result of an accident Y/day. A car pulled in front of an Oncoming UPS truck,and later told the police he didnt see the UPS truck.The Police found the driver of the car at fault,and issued him a citation. The police also mentioned the UPS driver did nothing wrong,and did took every evasive action to avoid the collision UPS on the other hand said the Driver 'Failed to Expect the Unexpected" and a Warning Letter has been issued. The Division Safety Manager said that had the UPS driver used his horn APPROACHING the intersection the driver of the car would have seen him,and there would have been no wreck So.................... in our PCM today we were told that in ALL intersections we were to use the horn to 'make ourselves visible'. I asked about using it at a 4 way stop,or round a bout wouldn't it appear confrontational? I was told I was a professional driver,and to "blow the horn in a non confrontational manner'................... so yeah today i got flipped off at about a dozen times ,but hey i guess i was visible!