The computer decides when to uise them. And to start at red, at the start (the garage, you'll see other places to click.
Garage
Modify
Slots
Race
Shop
Stats
Zone
Click on zone, and you should see your current car on the left. On the right, you'll see the zone you're in. Click on the Arrows for different Zones. Once you've found a zone that you like, click on 'Add Car to Zone'. Then you should see 'Set Strategy'. It doesn;t always work, though, click it twice. When it comes up, you'll see:
"Accept Races from other Humans?"
Yes 0 No0
"Start when the light is at..."
Red 0 Yellow 0 Green 0
"Risk"
Risk it a lot 0 Risk it a little 0 Play it safe 0
Or something like that.
HTHs! (Hope This Helps!)
Thanks. But I don't get the weapons at all... I keep getting attacked, and I can never attack...