Security Directive SD 1582/84-21-01B
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conveyances or a transportation facility used by one of the modes identified above, including
those already vaccinated. TSA developed these requirements in consultation with the
Department of Transportation (including the Federal Railroad Administration, the Federal
Transit Administration, and the Federal Motor Carrier Safety Administration) and the CDC.
DEFINITIONS
For the purpose of this SD, the following definitions apply:
Conveyance has the same definition as under 42 CFR 70.1, meaning “an aircraft, train, road
vehicle, vessel…or other means of transport, including military.”
Mask means a material covering the nose and mouth of the wearer, excluding face shields.
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Transportation hub/facility means any airport, bus terminal, marina, seaport or other port,
subway stations, terminal (including any fixed facility at which passengers are picked-up or
discharged), train station, U.S. port of entry, or any other location that provides transportation
subject to the jurisdiction of the United States.
ACTIONS REQUIRED
A. Owner/Operators must notify passengers with prominent and adequate notice of the mask
requirements to facilitate awareness and compliance.
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At a minimum, this notice must
inform passengers, at the time tickets are purchased or when otherwise booking
transportation and at the time the conveyance departs its location after boarding passengers,
of the following:
1. Federal law requires wearing a mask while on the conveyance and failure to comply may
result in denial of boarding or removal.
2. Refusing to wear a mask is a violation of federal law; passengers may be subject to
penalties under federal law.
B. Owner/Operators must require that individuals wear a mask, except as described in Sections
D., E., or F., as follows:
1. Any persons in a public transportation, passenger railroad, or bus conveyance covered
by this SD.
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A properly worn mask completely covers the nose and mouth of the wearer. A mask should be secured to the
head, including with ties or ear loops. A mask should fit snugly but comfortably against the side of the face. Masks
do not include face shields. Masks can be either manufactured or homemade and should be a solid piece of material
without slits, exhalation valves, or punctures. Medical masks and N-95 respirators fulfill the requirements of this
SD. CDC guidance for attributes of acceptable masks in the context of this SD is available at
https://www.cdc.gov/quarantine/masks/mask-travel-guidance.html
.
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Notice may include, if feasible, advance notifications on digital platforms, such as on apps, websites, or email;
posted signage in multiple languages with illustrations; printing the requirement on tickets; or other methods as
appropriate.