CMSC Driver's Ed Practice Test

A 3-digit highway typically represents connectors to larger highways or interstates. These highways are designed to facilitate access between major routes and local areas, often acting as feeder roads that link smaller communities or less significant destinations to the primary interstate system.

For example, a 3-digit highway might lead traffic from a rural area to a major interstate highway, helping to manage the flow of vehicles and improve connectivity. In contrast, the other option regarding major interstates refers to 2-digit highways, while local routes and state highways usually have different numbering conventions, which do not align with the classification of 3-digit highways. Therefore, the designation of a 3-digit number underscores its function primarily as a connector rather than an independent major route.