Honda Ridgeline Owner's Manual page 207

First (1) To shift from second to
first, pull the shift lever towards you,
then shift to the lower gear. This
position locks the transmission in
first gear. By upshifting and
downshifting through 1, 2, and D,
you can operate the transmission
much like a manual transmission
without a clutch pedal.
If you shift into first position when
the vehicle speed is above 28 mph
(45 km/h), the transmission shifts
into second gear first to avoid
sudden engine braking.
Engine Speed Limiter
If you exceed the maximum speed
for the gear you are in, the engine
speed will enter into the tachometer's
red zone. If this occurs, you may feel
the engine cut in and out. This is
caused by a limiter in the engine's
computer controls. The engine will
run normally when you reduce the
rpm below the red zone.
Automatic Transmission
201