Honda Prelude 1990 Online Reference Owner's Manual page 70

Shifting the Automatic (cont'd)
2 - 2 n d
Use 2nd gear for increased engine braking when driving downhill,
and increased power when driving uphill; also for driving on slippery
roads, and freeing the car from mud or sand, where 1 st gear could
provide too much power and cause skidding or wheel-spin. The
maximum recommended speed in 2nd gear is:
6 0 mph (97 km/h)
R-Reverse
CAUTION:
Shift into or out of reverse only after the car has come to a
complete stop; the transmission may be damaged if you shift
while the car is moving.
P-Park
CAUTION:
Use this position when starting the engine , or when parking. Shift
into Park only when the car is COMPLETELY stopped.
N — Neutral
Use when starting the engine or during prolonged idling in traffic.