Matrix[][]

width = 50 height = 9

type(x, y)

isDisabled() = hasCar at speed 0

hasCar()/!hasCar()

Tick()

Single car’s behavior

changeSpeed: Vf = Vi + A(default) canGoFront: front.isDisabled()

or front.hasCar(), brake until speed is equal to front car

changeLane():

getCarsAtFront() getsCarsAtTargetFront() isCarBeside()

shift lane and go v steps more

Collision? Order?

no time cost for lane change

8,6,3