Where to start.......44 yrs old been driving 23 yrs in the Toledo area and have been around trucks all my life. Mostly tanker (chemicals and fuel). Found a job with better hours recently so now I haul haz waste (rolloffs, van, tank). Been awhile since I've had to placard these loads that have various haz classes on it and I was stuck on how to use the 'dangerous' placard so after a little googling I found this site which answered my question along with a couple .gov sites and decided to join you guys and maybe I can return the favor someday. Thanks for having me aboard.