About Limited English Proficiency (LEP)

Communication is a paramount component of DOT’s statutory purpose to develop a safe, efficient, and convenient transportation system and to ensure the coordinated and effective administration of the transportation programs of the United States Government.

Proficiency and communication in English has been legally required for some of our most complex modes of transportation such as aviation, maritime, rail, and freight operations. While English is a requirement for many of our transportation professionals, the public we serve does not have an English proficiency obligation.

Individuals with limited English proficiency (LEP) often face significant limitations in understanding vital transportation safety information, whether it be signage, announcements, emergency procedures, or public safety campaigns, creating weaknesses that can lead to collisions, fatalities and injuries, miscommunication during emergencies, and difficulty accessing essential services. Access to safety information to individuals with limited English proficiency increases safety for all.