Crazy Taxi Codes -

Secret Push Bike:
At the character selection screen Push and hold + . Release , then release . Push and hold + again, then release them simultaneously. Then, Push . You will hear a ringing sound as you mount the motorcycle if you have entered the code correctly.
 

Or highlight a driver at the character selection screen, then Push + , + , + , then hold + + and select your player.
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To unlock the Push Bike in Another Day mode, select original mode. Then Push + , + , + , , + at the character selection screen.
 

Expert mode:
At the main menu, Push and hold + + . Continue to hold the buttons until the character selection screen appears, then Push to select the game mode and variation. The phrase Expert Mode will appear in the lower left corner to confirm correct code entry. No destination or arrow indicators will appear in this mode.
 

Disable arrow indicators:
Push and hold + after choosing your time limit and before the character selection screen appears. The message No Arrows will appear in the lower left corner to confirm correct code entry.

Disable destination indicator:
Hold + after choosing your time limit and before the character selection screen appears. The message No Destination Markers will appear in the lower left corner to confirm correct code entry.

Another Day mode:
Push at the character selection screen, then release it. Then, hold and Push . The message Another Day will appear in the lower left corner to confirm correct code entry. This mode modifies various positions in the game.

Alternate display:
Begin game play in arcade or original mode. Hold + and Push on controller two to toggle between first person and rear views. Hold + and Push on controller two to view a speedometer. Hold + and Push on controller two to zoom out to a pass-by pan. Hold + and Push on controller two to reset the display.

Crazy Speed:
Push Reverse then Push Drive very fast. If done correctly, your car will speed off very fast.
 

Crazy Dash:
Push Drive + Accelerate.

Crazy Stop:
Push Reverse + Brake.

Crazy Drift:
Push or while shifting into Reverse then into Drive while driving at a high rate of speed.

Jump:
When driving down a straight road, build speed, then Push Drive + Brake. Your car will jump up as if has hydraulics.

Extra speed:
Push + for extra speed on the road.