Each block is going to be one dot. He's looking for a simple directional light bar. I'd just use a simple micro controller and whatever driver circuit for the LED modules. The modules say they run directly off 12 volts so I'm not even sure they need a full driver or just a simple transistor switch. Keep in mind RobXr1 that if this is for a vehicle in the United states that the only colour you can use is yellow, red blue or green are not allowed for civilian use. I recommend a micro controller to sequence the LED's because the pattern you're looking for would be needlessly difficult to do in discrete logic.