To whom are warning letters sent, by whom, and what are the contents of the letter and the expectations for a carrier’s response?
A warning letter notifies a motor carrier that its safety performance data shows that the carrier is not fully complying with all applicable FMCSA safety regulations. The warning letter lists the Behavior Analysis and Safety Improvement Categories where the carrier’s performance indicates safety deficiencies and encourages the carrier to look at its Safety Measurement System data online. Motor carriers that receive warning letters should review their safety data and develop and execute strategies that will make their operation compliant with the safety regulations. Continued poor performance will lead to more intensive interventions. Warning letters are sent to the carrier by FMCSA headquarters. The warning letter does not require the motor carrier to respond to FMCSA. For additional Warning Letter FAQs view the Warning Letter Factsheet.
