Definition
Published flight paths shown on VFR terminal area charts that allow pilots operating under Visual Flight Rules to cross through Class B airspace. Use of these routes requires a specific ATC clearance, and pilots must follow the charted course, altitudes, and communication requirements.
Plain English
These are pre-drawn paths on a chart that let a VFR pilot fly through busy airspace around a major airport, but only after asking the controller and being told it is okay.
Context Anchor
Seen on VFR terminal area charts and used when flying near large, busy airports with controlled airspace.
Derivation
VFR stands for Visual Flight Rules — the rules used when the pilot navigates by looking outside rather than by instruments alone. 'Transition' comes from the Latin transire, meaning 'to cross over.' The routes are literally a way for VFR traffic to cross over through controlled airspace they would otherwise have to avoid.
Why Pilots Care
They provide a safe, predictable way for VFR pilots to avoid long detours around high-traffic terminal areas.
Intuition Check
Do not read “transition” as changing from VFR to IFR. Here it means crossing through or across a busy controlled airspace area while still flying VFR.
Example Sentence 1
Approaching the city from the south, the pilot requested the charted VFR transition route and was cleared through the Class B at 2,500 feet.
Example Sentence 2
ATC approved the aircraft to follow the published VFR Transition Route through the terminal area.