{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T15:01:00Z","timestamp":1777734060762,"version":"3.51.4"},"reference-count":14,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2021,11,12]],"date-time":"2021-11-12T00:00:00Z","timestamp":1636675200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Air corridors are an integral part of the advanced air mobility infrastructure. They are the virtual highways in the sky for the transportation of people and cargo in a controlled airspace at an altitude of around 1000 ft. to 2000 ft. above ground level. These corridors will be utilized by (unmanned) air taxis, which will be deployed in rural and metropolitan regions to carry passengers and freight, as well as air ambulances, which will be deployed to offer first responder services such as 911 emergencies. This paper presents fundamental insights into the design of air corridors with high operational efficiency as well as zero collisions. It begins with the definitions of air cube, skylane or track, intersection, vertiport, gate, and air corridor. Then a multi-layered air corridor model is proposed. Traffic at intersections is analyzed in detail with examples of vehicles turning in different directions. The concept of capacity of an air corridor is introduced along with the nature of distribution of locations of vehicles in the air corridor and collision probability inside the corridor are discussed. Finally, results of traffic flow simulations are presented.<\/jats:p>","DOI":"10.3390\/s21227536","type":"journal-article","created":{"date-parts":[[2021,11,14]],"date-time":"2021-11-14T20:51:53Z","timestamp":1636923113000},"page":"7536","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Air Corridors: Concept, Design, Simulation, and Rules of Engagement"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4450-584X","authenticated-orcid":false,"given":"Sabrina Islam","family":"Muna","sequence":"first","affiliation":[{"name":"Electrical Engineering Department, University of North Texas, Denton, TX 76203, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Srijita","family":"Mukherjee","sequence":"additional","affiliation":[{"name":"Harbor Branch Oceanographic Institute, Florida Atlantic University, Boca Raton, FL 33431, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1051-9925","authenticated-orcid":false,"given":"Kamesh","family":"Namuduri","sequence":"additional","affiliation":[{"name":"Electrical Engineering Department, University of North Texas, Denton, TX 76203, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3171-5581","authenticated-orcid":false,"given":"Marc","family":"Compere","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5450-3522","authenticated-orcid":false,"given":"Mustafa Ilhan","family":"Akbas","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering and Computer Science, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9373-8642","authenticated-orcid":false,"given":"P\u00e9ter","family":"Moln\u00e1r","sequence":"additional","affiliation":[{"name":"Amazon Web Services, Atlanta, GA 98170, USA"},{"name":"Robinson College of Business, Georgia State University, Atlanta, GA 30302, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7039-256X","authenticated-orcid":false,"given":"Ravichandran","family":"Subramanian","sequence":"additional","affiliation":[{"name":"Hermes Autonomous Air Mobility Solutions, Dallas-Fort Worth, TX 75225, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,12]]},"reference":[{"key":"ref_1","unstructured":"NASA (2021, August 08). 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Mag."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"100726","DOI":"10.1016\/j.paerosci.2021.100726","article-title":"Designing airspace for urban air mobility: A review of concepts and approaches","volume":"125","author":"Bauranov","year":"2021","journal-title":"Prog. Aerosp. Sci."},{"key":"ref_12","unstructured":"Lacher, A. (2021, November 11). Thoughts on Aam Routes (Aka Corridors), Available online: https:\/\/nari.arc.nasa.gov\/sites\/default\/files\/attachments\/AAM%20Routes%20-%20NASA%20AEWG%20-%20September%201st-Boeing-FINAL_0.pdf."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Johnson, S.C., Petzen, A., and Tokotch, D. (2017, January 5\u20139). Exploration of detect-and-avoid and well-clear requirements for small UAS maneuvering in an urban environment. Proceedings of the 17th AIAA Aviation Technology, Integration, and Operations Conference, Denver, CO, USA.","DOI":"10.2514\/6.2017-3074"},{"key":"ref_14","unstructured":"Fiore, M. 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Available online: https:\/\/citeseerx.ist.psu.edu\/viewdoc\/download?doi=10.1.1.103.4702&rep=rep1&type=pdf."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/22\/7536\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T07:29:30Z","timestamp":1760167770000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/22\/7536"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,11,12]]},"references-count":14,"journal-issue":{"issue":"22","published-online":{"date-parts":[[2021,11]]}},"alternative-id":["s21227536"],"URL":"https:\/\/doi.org\/10.3390\/s21227536","relation":{"has-preprint":[{"id-type":"doi","id":"10.20944\/preprints202109.0232.v1","asserted-by":"object"}]},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,11,12]]}}}