As far as I know there is no "law" against riding the tailboard of a fire truck. However, the National Fire Protection Association (NFPA), who writes standards on everything from fire apparatus to restaurant range hood extinguishing systems, has a standard that requires a seated, belted, enclosed position for every person riding on that apparatus. Technically, these standards are not laws but, in reality, they have the force of law. If someone is injured or killed while riding the back step a sharp lawyer will point out to a jury that these standards are written by fire service personnel (I know not all of them are; doesn't matter) for the protection of fire service personnel and to ignore them is opening yourself up to a major lawsuit. There was a case many years ago in Massachusetts where a firefighter was severely injured when he fell from a moving engine while he was standing in the open jumpseat area. The truck manufacturer claimed that the engine met all NFPA standards for the time it was built but the jury rejected that argument and awarded for the plaintiff. Fire departments ignore NFPA standards at their own risk. I started my fire service career riding the back step and driving semi-cab Mack fire apparatus. There was nothing more thrilling than responding through downtown while hanging on the rear bar for dear life. I am glad that I had the opportunity to do so but we cannot go back in history; today's legal environment will not allow it. bulldogboy