Bonus vehicles:
     Unlock  all  320 cars in the game. Then the Pac-Man character and
the Sony Eat'em Up car can be selected in time attack mode.

Turbo Boost:
     When you are playing on any race, press R2 + L2 for a super turbo
boost.

Four player mode:
     Connect  two  PlayStations via a link cable. A "Link Battle" mode
that allows a simultaneous four player game will appear.

Extra Trial mode:
     Successfully complete the game in Gran Prix mode.

Turbo (Japanese version):
     Press L2 + R2 during game play.

Rage Racer information:
     Use a memory card with a saved game file from Rage Racer to place
your old team information on the cars in Ridge Racer Type 4.

Soundtrack:
     Play  the  game  disc  in an audio CD player. The voice and music
from  the  game  can  be  heard  on  tracks  two through nine. To hear
additional  music from the game, listen to tracks two and above on the
turbo mode disc.