A connector is a highway

Highway

A highway is any public road. In American English, the term is common and almost always designates major roads. In British English, the term designates any road open to the public. Any interconnected set of highways can be variously referred to as a "highway system", a "highway network", or a...

 or freeway road that connects to another highway or freeway. It can be part of an interchange

Interchange (road)

In the field of road transport, an interchange is a road junction that typically uses grade separation, and one or more ramps, to permit traffic on at least one highway to pass through the junction without directly crossing any other traffic stream. It differs from a standard intersection, at which...

 such as the MacArthur Maze

MacArthur Maze

The MacArthur Maze refers to the large freeway interchange located near the eastern end of the San Francisco – Oakland Bay Bridge in Oakland, California and is the largest freeway interchange in the world...

 or a longer roadway such as the 13 mi (20 km) Interstate 635 (Kansas-Missouri)

Interstate 635 (Kansas-Missouri)

Interstate 635 is a connector highway between Interstate 35 in Overland Park, Kansas and Interstate 29 in Kansas City, Missouri, approximately 12 miles long. It is mostly in the U.S. state of Kansas, servicing the city of Kansas City, Kansas, but extends into Kansas City, Missouri as well...

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A connector route is a type of special route or supplemental route in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 that serves as a connector, connecting one route to a more prominent route. Connector routes are found among the United States Numbered Highways

United States Numbered Highways

The system of United States Numbered Highways is an integrated system of roads and highways in the United States numbered within a nationwide grid...

 and among some state route systems like Michigan

Michigan Highway System

The Michigan State Trunkline Highway System is made up of all the highways designated as Interstates, U.S. Highways and State Highways in the US state of Michigan. The system is maintained by the Michigan Department of Transportation and comprises of trunklines in all 83 counties of Michigan on...

 and Nebraska.

Connector routes can also be designated as a routing between two numbered highways. For example, Connector M-44

M-44 (Michigan highway)

M-44 is a state trunkline highway in the western region of the US state of Michigan. It runs northward from the intersection of M-11 and M-37 toward the Rockford area. The highway then turns eastward to Belding, and it ends six miles north of Ionia at M-66...

 runs along Plainfield Avenue between Interstate 96

Interstate 96

Interstate 96 is an intrastate Interstate Highway that is entirely within the US state of Michigan. Its western terminus is at an interchange with US Highway 31 and Business US Highway 31 , on the western boundary of Norton Shores southeast of Muskegon. Its eastern terminus is at I-75 near the...

 and M-44

M-44 (Michigan highway)

M-44 is a state trunkline highway in the western region of the US state of Michigan. It runs northward from the intersection of M-11 and M-37 toward the Rockford area. The highway then turns eastward to Belding, and it ends six miles north of Ionia at M-66...

 north of Grand Rapids, Michigan

Grand Rapids, Michigan

Grand Rapids is a city in the U.S. state of Michigan. The city is located on the Grand River about 40 miles east of Lake Michigan. As of the 2010 census, the city population was 188,040. In 2010, the Grand Rapids metropolitan area had a population of 774,160 and a combined statistical area, Grand...

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