will 397.13(b) put my truck out of service
No. Across our 13 million inspection records, 397.13(b) citations have resulted in a 0.0% out-of-service rate. Of the 1 all-time citation for smoking or carrying a lighted cigarette, cigar, or pipe within 25 feet of a CMV containing hazmat, the vehicle was not placed out of service. This is significantly lower than the all-FMCSR average OOS rate of 31.4%, meaning this violation is treated as a warning-level finding rather than an immediate roadside enforcement action.