2002-01-08 Except that it is obvious the FFU is the base system. Why not 4000 kg, or 4500 kg or even 5000 kg? 4536 kg is an obvious conversion of a rational 10 000 lbs.
I'll be more impressed when the FFU looks goofy and the metric looks rational. John ----- Original Message ----- From: "Brian J White" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Tuesday, 2002-01-08 20:55 Subject: [USMA:17348] US Federal Law in Metric! > Check this out. I was searching through some Federal Regulation Code...I > was looking for an automotive law in particular. In browsing I noticed > that the entire document was in metric first with english in parenthesis... > > An example... > > General requirements for trailers and semitrailers > manufactured on or after January 26, 1998. Each trailer and semitrailer > with a gross vehicle weight rating of 4,536 kg (10,000 pounds) or more, > and manufactured on or after January 26, 1998, must be equipped with a > rear impact guard that meets the requirements of Federal Motor Vehicle > Safety Standard No. 223 (49 CFR 571.223) in effect at the time the > vehicle was manufactured. When the rear impact guard is installed on the > trailer or semitrailer, the vehicle must, at a minimum, meet the > requirements of FMVSS No. 224 (49 CFR 571.224) in effect at the time the > vehicle was manufactured. The requirements of paragraph (a) of this > section do not apply to pole trailers (as defined in Sec. 390.5 of this > chapter); pulpwood trailers, low chassis vehicles, special purpose > vehicles, wheels back vehicles (as defined in Sec. 393.5); and trailers > towed in driveaway-towaway operations (as defined in Sec. 390.5). > (2) Impact guard width. The outermost surfaces of the horizontal > member of the guard must extend to within 100 mm (4 inches) of the side > extremities of the vehicle. The outermost surface of the horizontal > member shall not extend beyond the side extremity of the vehicle. > (3) Guard height. The vertical distance between the bottom edge of > the horizontal member of the guard and the ground shall not exceed 560 > mm (22 inches) at any point across the full width of the member. Guards > with rounded corners may curve upward > > [[Page 1039]] > > within 255 mm (10 inches) of the longitudinal vertical planes that are > tangent to the side extremities of the vehicle. > (4) Guard rear surface. At any height 560 mm (22 inches) or more >
