private void addStraight(int end) {
		if (intervalLengthLongerThanSmax(end)) {
			System.out.println("TODO: Restricted section too long, no possible solutions!");
		} else {
			if (restricted.isSelected()) road.addStraightSection(end, false);
			else road.addStraightSection(end, true);
			updateList();
		}
	}