A temporary use license issuing apparatus includes a communicating unit, an instruction receiving unit, and an issuing unit. A tractor which includes sensors, a plow locator and a monitor system is presented. The bit rate is constrained by predetermined upper and lower bit rate limits. If there is a match, the check is verified; if not, the check is not verified. A repair link having a pair of offset side bars is adapted to connect on one end to the inner link of one of the pairs of chain links and on the other end to the outer link of another one of the pairs of chain links.