Hello, I'm stuck on my new game. It's called Need for Speed Undercover. I started to play it but I couldn't understand what the "Jump to Race" means. Also I saw the green or red circle on the road. I don't understand what that is used for. I went inside it but when I pressed the select button, my car reappeared on the outside of the green circle and was transparent and flashing. I hope someone can help me out. Thank you.

Ike:)