An Empirical Framework for Intersection Optimization Based on Uniform Design

Table 6

Experimental factor and dummy variables.

Optimization measure	Factor	# of levels	Dummy variable
Convertible lane	A	5	A^1, A^2, A^3, A^4
Right-turn lane	B	2	B^1
Pedestrian overpass	C	2	C^1
Signal control	D	10	D^1, D^2, D^3, D^4, D^5, D^6, D^7, D^8, D^9