"state trunkline system" . "state trunk line" . . "state trunkline" . "Michigan State Trunkline Highway System" . . "state trunkline highway" . . "Michigan" . "State Trunkline System" . "Highway system of Michigan" . "Michigan State Trunkline Highway System#Freeways" . . "State Highways" . "Michigan roads" . "Michigan State Trunkline Highway System" . . . "state highway" . . "Michigan State Trunkline Highway System#Late 20th century" . "highway of any kind in Michigan" . "state's highway system" . "state highways" . "trunkline network" . "State Trunkline Highway System" . "trunkline" . "state trunkline highway system" . . "MI" . "trunklines" . . "state trunkline highways" .