will 391.11(a) put my truck out of service
No, but it's possible. Across our 13 million inspection records, 391.11(a) citations result in an out-of-service order only 1.3% of the time. Of 77 all-time citations for this violation, just 1 led to OOS placement. However, this is well below the national average OOS rate of 31.4% across all FMCSR codes, meaning this violation is treated more leniently than most. Most citations result in a warning or citation without vehicle removal.