| Ex. ECO-B-005 | TSA Security Directives SD 1582/84-21-01, -01A, -01B (surface transportation; Jan. 31, Apr. 30, Aug. 20, 2021); SD 1544-21-02 (aircraft operators) and SD 1542-21-01 (airports) (Jan. 31, 2021); ratification 86 Fed. Reg. 26825Security Directive 1582/84-21-01: Security Measures - Face Mask Requirements (passenger railroads, intercity bus, public transportation) | Transportation Security Administration (DHS) | United StatesFederal | Jan. 31, 2021 | 2021 Q12021 Q2 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. FED-050 | TSA Security Directives SD 1582/84-21-01, -01A, -01B (surface transportation; Jan. 31, Apr. 30, Aug. 20, 2021); SD 1544-21-02 (aircraft operators) and SD 1542-21-01 (airports) (Jan. 31, 2021); ratification 86 Fed. Reg. 26825SD 1582/84-21-01, Security Measures - Mask Requirements (surface transportation) | Transportation Security Administration, DHS (Senior Official Performing the Duties of the Administrator) | United States (every public transportation, passenger railroad and fixed-route bus owner/operator under 49 C.F.R. §§ 1582.1(a), 1584.1)Federal | Jan. 31, 2021 | 2021 Q12021 Q2 | Face-covering requirementTravel and quarantineWorkplace rules | Primary source read | |
| Ex. FED-052 | Security Directive SD 1582/84-21-01B, Security Measures - Mask RequirementsSD 1582/84-21-01B, Security Measures - Mask Requirements (cancels and supersedes SD 1582/84-21-01A) | Transportation Security Administration, DHS | United States (surface transportation owner/operators)Federal | Aug. 20, 2021 | 2021 Q3 | Face-covering requirementTravel and quarantineWorkplace rules | Primary source read | |
| Ex. FED-051 | Security Directive SD 1582/84-21-01A, Security Measures - Mask RequirementsSD 1582/84-21-01A, Security Measures - Mask Requirements (cancels and supersedes SD 1582/84-21-01) | Transportation Security Administration, DHS | United States (surface transportation owner/operators)Federal | Apr. 30, 2021 | 2021 Q22021 Q3 | Face-covering requirementTravel and quarantineWorkplace rules | Primary source read | |
| Ex. ECO-B-006 | Security Directive SD 1582/84-21-01ASecurity Directive 1582/84-21-01A: Security Measures - Mask Requirements (surface transportation) | Transportation Security Administration (DHS) | United StatesFederal | Apr. 30, 2021 | 2021 Q22021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. ECO-B-007 | Security Directive SD 1582/84-21-01BSecurity Directive 1582/84-21-01B: Security Measures - Mask Requirements (surface transportation) | Transportation Security Administration (DHS) | United StatesFederal | Aug. 20, 2021 | 2021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. FED-056 | Notification of Ratification of Security Directives and Emergency Amendment (TSA SD 1542-21-01, SD 1544-21-02, EA 1546-21-01)Ratification of Security Directives and Emergency Amendment, 86 Fed. Reg. 26825 (May 18, 2021) | Department of Homeland Security, Office of Strategy, Policy, and Plans; Transportation Security Oversight Board | United StatesFederal | Apr. 20, 2021 | 2021 Q22021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. FED-057 | Determination of a National Emergency Requiring Actions To Protect the Safety of Americans Using and Employed by the Transportation System (Jan. 27, 2021)Determination of a National Emergency Requiring Actions To Protect the Safety of Americans Using and Employed by the Transportation System… | Acting Secretary of Homeland Security David P. Pekoske | United States transportation systemFederal | Jan. 27, 2021 | 2021 Q12021 Q22021 Q3 | Emergency declarationTravel and quarantine | Primary source read | |
| Ex. AGY-USCG-PORTS-018 | Notice of temporary exemption, Exemption To Extend the Expiration Date of Certain Transportation Worker Identification Credentials, 85 Fed. Reg. 21017 (Apr. 15, 2020)Exemption To Extend the Expiration Date of Certain Transportation Worker Identification Credentials | Transportation Security Administration, Department of Homeland Security | Transportation Security Administration (with the U.S. Coast Guard); nationwideFederal | Apr. 10, 2020 | 2020 Q22020 Q3 | Other | Primary source read | |
| Ex. FED-053 | TSA Security Directives SD 1582/84-21-01, -01A, -01B (surface transportation; Jan. 31, Apr. 30, Aug. 20, 2021); SD 1544-21-02 (aircraft operators) and SD 1542-21-01 (airports) (Jan. 31, 2021); ratification 86 Fed. Reg. 26825SD 1544-21-02, Security Measures - Face Masks | Transportation Security Administration, DHS | United States (aircraft operators under 49 C.F.R. part 1544)Federal | Jan. 31, 2021 | 2021 Q12021 Q2 | Face-covering requirementTravel and quarantineWorkplace rules | Primary source read | |
| Ex. FED-054 | Security Directive SD 1542-21-01, Security Measures - Face Masks (airports)SD 1542-21-01, Security Measures - Face Masks | Transportation Security Administration, DHS | United States (airport operators under 49 C.F.R. part 1542)Federal | Jan. 31, 2021 | 2021 Q12021 Q2 | Face-covering requirementTravel and quarantineWorkplace rules | Primary source read | |
| Ex. FED-055 | Emergency Amendment EA 1546-21-01, Security Measures - Face Masks (foreign air carriers)EA 1546-21-01, Security Measures - Face Masks | Transportation Security Administration, DHS | United States (foreign air carriers under 49 C.F.R. part 1546)Federal | Jan. 31, 2021 | 2021 Q12021 Q2 | Face-covering requirementTravel and quarantineWorkplace rules | Primary source read | |
| Ex. LAW-305 | 49 U.S.C. 114 (2023 ed.)Transportation Security Administration; (l)(2) emergency regulations and security directives | Congress of the United States | United States or State (legal authority; see citation)Legal authority | Jan. 1, 2024 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Legal authorityOther | Primary source read | |
| Ex. MET-MKE-044 | Federal Mask Mandate for Public Transportation Extended (release of Aug. 23, 2021)Masks required on all MCTS buses regardless of vaccination status through at least January 18, 2022 | Milwaukee County Transit System (implementing the TSA Security Directive and CDC order) | Milwaukee County, Wisconsin (Milwaukee County Transit System)County | Aug. 23, 2021 | 2021 Q12021 Q22021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. SEC-21-GM-022 | TSA Checkpoint Travel Numbers 2020 ContextAir travel and airport ground transportation, 2020-2021 (class): the airport taxi, limousine, shuttle and charter trade at every U.S. hub… | Transportation Security Administration; Centers for Disease Control and Prevention; Department of Transportation; airport authorities | Every U.S. airport, NATIONWIDEOrganizer | Dec. 31, 2020 | 2020 Q4 | Organizer notice | Primary source read | |
| Ex. SEC-23-GM-011 | Organizer noticeCLASS: TWIC (Transportation Worker Identification Credential) enrollment and renewal for offshore, port and terminal access | Transportation Security Administration (credential); U.S. Coast Guard (facility and vessel access under 33 C.F.R. parts 104-106) | TSA enrollment centers nationwide (Universal Enrollment Services), USOrganizer | Apr. 10, 2020 | 2020 Q2 | Organizer notice | Primary source read | |
| Ex. SEC-23-GM-012 | Organizer noticeCLASS: Hazardous Materials Endorsement (HME) security threat assessments for drivers hauling explosives, fuel and oilfield chemicals | Transportation Security Administration; State driver licensing agencies | State licensing agency offices and TSA enrollment centers, USOrganizer | Apr. 2, 2020 | 2020 Q2 | Organizer notice | Primary source read | |
| Ex. AGY-ST-TRANSPORT-PORTS-TRANSIT-072 | RIPTA 'Response to Coronavirus (COVID-19)' page, updated June 7, 2021: masks required at all times per federal law (TSA); 'Failure to comply will result in denial of boarding or removal, and may result in penalties'; disability exemptions only by prior request; transit centers and Photo ID offices still closed; free rides to vaccination appointments; transit for essential travel onlyRIPTA's Response to Coronavirus (COVID-19) - UPDATED: June 7, 2021 (TSA mask requirement; denial of boarding; transit centers closed) | Rhode Island Public Transit Authority (RIPTA) | Rhode Island (statewide)State | June 7, 2021 | 2021 Q12021 Q22021 Q3 | Business closureFace-covering requirementTravel and quarantine | Primary source read | |
| Ex. FED-061 | Executive Order 13998Promoting COVID-19 Safety in Domestic and International Travel, 86 Fed. Reg. 7205 (Jan. 26, 2021) | President Joseph R. Biden, Jr. | United States (domestic and international travel)Federal | Jan. 21, 2021 | 2021 Q12021 Q22021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. MET-MSY-037 | RTA notice implementing the federal mask mandate for public transitRTA follows federal mask mandate for public transit | New Orleans Regional Transit Authority (applying the CDC order of Jan. 29, 2021 and TSA Security Directive) | New Orleans Regional Transit Authority (Orleans Parish)Sector regulator | Feb. 1, 2021 | 2021 Q12021 Q22021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. AGY-ST-TRANSPORT-PORTS-TRANSIT-054 | NCDOT release, Sept. 2, 2021: five Hatteras-route employees positive and isolating for at least 14 days; Hatteras-Ocracoke round trips reduced from 60 to 44 from Sept. 3, 2021 until normal schedules can safely resume; Currituck-Knotts Island suspended Sept. 4-6, 2021; employees and passengers required to wear face coverings inside vessels and terminal facilities regardless of vaccination status per CDC and TSA requirementsNCDOT Reports Five Positive COVID-19 Tests Among Hatteras Ferry Staff | North Carolina Department of Transportation, Ferry Division | North Carolina (Hatteras-Ocracoke route; Currituck-Knotts Island route)State | Sept. 2, 2021 | 2021 Q3 | Context (guidance or announcement)Face-covering requirementTravel and quarantineQuarantine and isolation | Primary source read | |
| Ex. MET-STL-043 | Metro Transit release: Masks Are Still Required for Everyone on Metro TransitMasks required for everyone, vaccinated or not, on MetroBus, MetroLink, Metro Call-A-Ride, at transit centers and on platforms, under the… | Metro Transit (Bi-State Development) | Bi-State Development Agency (Metro Transit), Missouri-IllinoisSector regulator | May 18, 2021 | 2021 Q22021 Q3 | Face-covering requirementTravel and quarantine | Primary source read | |
| Ex. AGY-USCG-PORTS-078 | Operations Alert, COVID-19 Protocols - Social Distancing at The Port of Virginia (Apr. 8, 2020)COVID-19 Protocols - Social Distancing at The Port of Virginia | The Port of Virginia (Virginia Port Authority / Virginia International Terminals, LLC), Operations | Virginia Port Authority and Virginia International Terminals, LLC; all Port of Virginia terminals and facilitiesState | Apr. 8, 2020 | 2020 Q22020 Q32020 Q4 | Workplace rulesOther | Primary source read | |