For what it's worth,
RET (Rapid Exit Taxiways) at larger airports have a design speed (
i.e. the maximum speed in which one can turn into them) of
50 knots in the wet.
See section 1.3.17 of the
ICAO Aerodrome Design Manual / Part 2 / Taxiways, Aprons and Holding Bays and for which one would assume (
based upon similar aircraft types listed that tome) that a Bombardier Global 6000 is likely classified as a 'code 3' type of aircraft with respect to RET design criteria.