Press Play in the lower right corner, followed by Start on the other side of the screen. The goal of this game is to keep the cars moving and prevent any wrecks from occurring. In the first level, all you need to do is use your mouse to click the orange car on the right side of the screen. This will allow the rest of the cars to pass, and you to proceed to the next level.
The next level requires you to change the traffic levels to keep cars flowing. When you click a light, it will transition from red to yellow to green. The key to doing this is regularly changing the lights so no cars sit at the intersection for too long. Additionally, be sure the intersection is clear before you let cars from an opposite direction move through it!
MOUSE: control game