Study on Accessibility of Feeder Lines with Different Geometric Shapes

Table 1

The accessibility calculation formulas of linear, loop, Y-shaped, and spoon-shaped lines.

Linear lines	Explanation	The number of stops is n
	P
	Loop lines	Explanation	The number of stops is n
		P	, n is odd; , n is even
		, n is odd; , n is even
		, n is odd; , n is even
Y-shaped lines	Explanation	There are n stops on the trunk including the stop at the branch point and m stops on each branch
	P
	Spoon-shaped lines	Explanation	There are m stops on the trunk including the stop at the branch point and n stops on the loop part
		P	, n is odd; , n is even
		, n is odd; , n is even
		, n is odd; , n is even