Dave, that's a good point, but down here, yellow/orange almost exclusively means "warning/danger" in almost all states so construction equipment/trucks, snow plows, tow trucks, etc. use yellow/orange. What's interesting is that I recently moved from Maryland with Pennsylvania being just north of it and Virginia being just south of it. In PA, a flashing blue light means volunteer firefighter and red for police. In Virginia (and West Virginia), flashing blue means police and red means fire apparatus both career or volunteer. In MD, the police use red and blue flashing lights. It's easy to drive from southern PA through MD and into northern VA in about an hour. Talk about confusing some people!
Yep, it can be pretty confusing.... many people here don't know what the flashing Green is.
Agreed, Yellow/Orange is likely a safe bet, but as traffic laws vary so widely, I wanted to mention it b4 DL put his first pay cheque to use ! :thumbsup:
Rgds, D.