High-Speed Taxiway Turnoff
First turnoff: Minimum of 6000 feet from
downwind end of runway.
Last turnoff: Minimum of 1000 feet from upwind
end of runway.
Minimum spacing between turnoffs: 2000 feet.
High-speed turnoffs shall be located only where
the parallel taxiway centerline is at or
above elevation of runway centerline, but not
by more than 5 feet.
Angle of turnoff
Minimum: 1000 feet between edges of runway and
parallel taxiway measured along turnoff
Throat width: 100 feet tapering to 75 feet at
point 400 feet from throat. See Figure 24.
Central curve is compounded with entrance
curve. See Figure 24.
Same as for intermediate turnoff (see Table
There shall be no superelevation; however, the
turnoff surface is warped from the edge of the
runway, having a transverse slope of -1%
to -1-1/2%, to the regular cross-section of the
Same as for taxiways (see Table 10).
See NAVAIR 51-50AAA-2.