Jet routes extend from FL 180 to FL 450, inclusive, and are designated to indicate frequently used routings. Jet routes may also be designated for route continuity where such designation would clearly facilitate description of the intended route of flight.
“T" class NAVAIDs (e.g., TVOR) shall not be used to designate jet routes.
20-4-2. NAVAID SPACING
Jet routes are normally based on “H" class NAVAIDs spaced no farther apart than 260 NM or non-VOR/DME area navigation system performance. They may be based on more widely spaced NAVAIDs if a usable signal can be provided (e.g., GPS) and frequency protection afforded for the distance required.
20-4-3. JET ROUTE WIDTH
Jet routes have no specified width however, alignment should be planned using protected airspace specified for VOR airways in FAAO 8260.3, TERPS, or any flight inspection limitation to prevent overlapping special use airspace or the airspace to be protected for other jet routes.