Time to install some train horns.
I have had this happen to me several times and have just learned to go around. If I have to cross the white line and merge a hundred feet or so before where I am supposed to so I can avoid being sandwiched between a retard and a semi, I will do it. Around me most of the on ramps have shoulders and I have passed people several times on the shoulder because they were attempting to merge onto the highway at 40 mph when cars are whizzing past at 70.
I have had this happen to me several times and have just learned to go around. If I have to cross the white line and merge a hundred feet or so before where I am supposed to so I can avoid being sandwiched between a retard and a semi, I will do it. Around me most of the on ramps have shoulders and I have passed people several times on the shoulder because they were attempting to merge onto the highway at 40 mph when cars are whizzing past at 70.