All of M-1 north of I-75 is listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

The entire length of the expressway is listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

This connection is listed on the National Highway System, a network of roadways important to the country's economy, defense, and mobility.

No part of M-134 is listed on the National Highway System, a system of roadways important to the country's economy, defense, and mobility.

M-217 is not listed on the National Highway System, a system of highways important to the country's economy, defense, and mobility.

M-157 has not been listed on the National Highway System, a system of highways important to the nation's economy, defense, and mobility.

M-183 has not been listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

No segment of M-86 has been listed on the National Highway System, a system of roads important to the nation's economy, defense, and mobility.

Segments of it have been listed on the National Highway System (NHS), a network of roads important to the nation's economy, defense, and mobility.

All of M-44 to this point is listed on the National Highway System, a network of roadways important to the nation's economy, defense, and mobility.