canvas {
    default-points: false;
    default-lines: false;
}

way[pattern] {
	width: 10;
	color: red;
	dashes: 20, 20;
	dashes-background-color: green;
	dashes-offset: 0;
}

way[pattern=B] {
	dashes-offset: 4;
}

way[pattern=C] {
	dashes-offset: 8;
}