What is typically the speed characteristic of Class I highways?

Class I highways are designed primarily for through traffic and typically serve major routes for long-distance travel. These highways often feature design elements that facilitate higher speeds, such as multiple lanes, limited access points, and minimal stops. The goal of these highways is to promote smooth and efficient vehicular movement over extended distances.

The infrastructure is constructed to accommodate faster travel, with features like wider turning radii, gentler grades, and strategically placed signage that supports higher operating speeds. Therefore, the designation of Class I highways correlates to their function as arterial routes that enable vehicles to maintain higher speeds safely. This design consideration is crucial for reducing congestion and enhancing overall travel efficiency, making it essential for users to understand that Class I highways are specifically intended for such use.