U.S. Department of Homeland Security
Transportation Security Administration
6595 Springfield Center Drive
Springfield, Virginia 20598
Page 1 of 5
Transportation
Security
Administration
SECURITY DIRECTIVE
NUMBER SD 1582/84-21-01B
SUBJECT Security Measures Mask Requirements
EFFECTIVE DATE September 14, 2021
EXPIRATION DATE January 18, 2022
CANCELS AND SUPERSEDES SD 1582/84-21-01A
APPLICABILITY Each owner/operator identified in 49 CFR 1582.1(a); each
owner/operator identified in 49 CFR 1584.1 that provides
fixed-route service as defined in 49 CFR 1500.3
AUTHORITY 49 U.S.C. 114
LOCATION United States
PURPOSE AND GENERAL INFORMATION
Due to the ongoing COVID-19 pandemic and to reduce the spread of the virus, the President
issued an Executive Order, Promoting COVID-19 Safety in Domestic and International Travel,
on January 21, 2021, requiring masks to be worn in and on airports, on commercial aircraft, and
in various modes of surface transportation.
1
On January 27, 2021, the Acting Secretary of
Homeland Security determined a national emergency existed
2
requiring the Transportation
Security Administration (TSA) to issue this Security Directive (SD) to implement the Executive
Order and enforce the related Order
3
issued by the Centers for Disease Control and Prevention
(CDC), pursuant to the authority of 49 U.S.C. section 114. Consistent with these mandates and
TSA’s authority, TSA is issuing this SD requiring masks to be worn to mitigate the spread of
COVID-19. The requirements in this SD must be applied to all persons in or on one of the
1
86 FR 7205 (published Jan. 26, 2021).
2
Acting Secretary David P. Pekoske, Determination of a National Emergency Requiring Actions to Protect the
Safety of Americans Using and Employed by the Transportation System (Jan. 27, 2021), available at
https://www.dhs.gov/publication/determination-national-emergency-requiring-actions-protect-safety-americans-
using-and (accessed Feb. 22, 2021). The Acting Secretary’s determination directs TSA to take actions consistent
with its statutory authorities “to implement the Executive Order to promote safety in and secure the transportation
system.” In particular, the determination directs TSA to support “the CDC in the enforcement of any orders or other
requirements necessary to protect the transportation system, including passengers and employees, from COVID-19
and to mitigate the spread of COVID-19 through the transportation system.”
3
See Order Under Section 361 of the Public Health Service Act (42 U.S.C. § 264) and 42 Code of Federal
Regulations §§ 70.2, 71.31(B), 71.32(B); Requirement for Persons to Wear Masks While on Conveyances and at
Stations, Ports, or Similar Transportation Hubs (January 29, 2021).
Security Directive SD 1582/84-21-01B
Page 2 of 5
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.
4
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.
5
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.
4
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
.
5
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.
Security Directive SD 1582/84-21-01B
Page 3 of 5
2. Any person in public areas of transportation hubs/facilities controlled by the
owner/operator (such as for purposes of purchasing tickets, waiting areas, and
platforms for boarding and disembarking) for the duration of travel, boarding, and
disembarking.
C. Owner/Operators must ensure that direct employees and contractor employees wear a mask
at all times when in conveyances or in or around transportation facilities under their control,
except as described in Sections D., E., or F.
D. The requirement to wear a mask does not apply under the following circumstances:
1. When necessary to temporarily remove the mask for identity verification purposes.
2. While eating, drinking, or taking oral medications for brief periods
6
. Prolonged periods
of mask removal are not permitted for eating or drinking; the mask must be worn
between bites and sips.
3. While communicating with a person who is deaf or hard of hearing, when the ability to
see the mouth is essential for communication.
4. If unconscious (for reasons other than sleeping), incapacitated, unable to be awakened, or
otherwise unable to remove the mask without assistance.
7
E. The following conveyances are exempted from wearing masks:
1. Persons in private conveyances operated solely for personal, non-commercial use.
2. A driver, when operating a commercial motor vehicle as this term is defined in 49 CFR
390.5, if the driver is the sole occupant of the vehicle.
6
The CDC has stated that brief periods of close contact without a mask should not exceed 15 minutes. See
https://www.cdc.gov/coronavirus/2019-ncov/php/public-health-recommendations.html
7
Persons who are experiencing difficulty breathing or shortness of breath or are feeling winded may remove the
mask temporarily until able to resume normal breathing with the mask. Persons who are vomiting should remove
the mask until vomiting ceases. Persons with acute illness may remove the mask if it interferes with necessary
medical care such as supplemental oxygen administered via an oxygen mask.
Security Directive SD 1582/84-21-01B
Page 4 of 5
F. This SD exempts the following categories of persons from wearing masks:
8
1. Children under the age of 2.
2. People with disabilities who cannot wear a mask, or cannot safely wear a mask, because
of the disability as defined by the Americans with Disabilities Act (42 U.S.C. 12101 et
seq.).
9
3. People for whom wearing a mask would create a risk to workplace health, safety, or job
duty as determined by the relevant workplace safety guidelines or federal regulations.
G. Owner/Operators must establish procedures to manage situations with persons who refuse to
comply with the requirement to wear a mask. At a minimum, these procedures must ensure
that if an individual refuses to comply with an instruction given by the owner/operator with
respect to wearing a mask, the owner/operator must:
1. Deny boarding;
2. Make best efforts to disembark the individual as soon as practicable; or
3. Make best efforts to remove the individual from the transportation hub/facility.
H. If an individual’s refusal to comply with the mask requirement constitutes a significant
security concern, the owner/operator must report the incident to the Transportation Security
Operations Center (TSOC) at 1-866-615-5150 or 1-703-563-3240 in accordance with 49
CFR 1570.203.
8
Owner/Operators may impose requirements, or conditions of carriage, on persons requesting an exemption from
the requirement to wear a mask, including medical consultation by a third party, medical documentation by a
licensed medical provider, and/or other information as determined by the owner/operator, as well as require
evidence that the person does not have COVID-19 such as a negative result from a SAR-CoV-2 viral test or
documentation of recovery from COVID-19. CDC definitions for SAR-CoV-2 viral test and documentation of
recovery are available in Frequently Asked Questions at:
https://www.cdc.gov/coronavirus/2019-
ncov/travelers/testing-international-air-travelers.html. Owners/Operators may also impose additional protective
measures that improve the ability of a person eligible for exemption to maintain social distance (separation from
others by 6 feet), such as scheduling travel at less crowded times or on less crowded conveyances, or seating or
otherwise situating the individual in a less crowded section of the conveyance or transportation hub/facility
Owners/Operators may further require that persons seeking exemption from the requirement to wear a mask request
an accommodation in advance.
9
This is a narrow exception that includes a person with a disability who cannot wear a mask for reasons related to
the disability; who, e.g., do not understand how to remove their mask due to cognitive impairment, cannot remove a
mask on their own due to dexterity/mobility impairments, or cannot communicate promptly to ask someone else to
remove their mask due to speech impairments or language disorders, or cannot wear a mask because doing so would
impede the function of assistive devises/technology. It is not meant to cover persons for whom mask-wearing may
only be difficult. The CDC issued additional guidance on disability exemptions on March 23, 2021, which is
available at https://www.cdc.gov/quarantine/masks/mask-travel-guidance.html
.
Security Directive SD 1582/84-21-01B
Page 5 of 5
PREEMPTION
The requirements in this SD do not preempt any State, local, Tribal, or territorial rule, regulation,
order, or standard necessary to eliminate or reduce a local safety hazard, which includes public
health measures that are the same or more protective of public health than those required in this
SD, if that provision is not incompatible with this SD.
PROCEDURES FOR SECURITY DIRECTIVES
A. The owner/operator must immediately provide written confirmation of receipt of this SD via
email to TSA at TSA[email protected].
B. The owner/operator must immediately disseminate the information and measures in this SD
to corporate senior management, security management representatives, and any personnel
having responsibilities in implementing the provisions in this directive. The owner/operator
may widely share this SD with anyone subject to the provisions of this directive to include,
but not limited to, federal, state, and local government personnel; direct owner/operator
employees; tenants; contractors; transport personnel; taxi drivers; law enforcement; etc.
C. All individuals responsible for implementing this SD must be briefed by the owner/operator.
If the owner/operator is unable to implement the measures in this SD, the owner/operator
must submit proposed alternative measures and the basis for submitting the alternative
measures to TSA for approval.
D. The owner/operator may comment on this SD by submitting data, views, or arguments in
writing to TSA via email at TSA[email protected] . TSA may amend the SD based on
comments received. Submission of a comment does not delay the effective date of the SD.
APPROVAL OF ALTERNATIVE MEASURES
The owner/operator must immediately notify TSA via email at TSA[email protected] if
unable to implement any of the measures in this SD. The owner/operator may submit proposed
alternative measures and a justification for adopting those measures to the email addresses
above.
David Pekoske
Administrator