Delaware Driver Education Complete Practice Test 2025

An interstate route sign signifies that the road is part of the national system of interstate highways, which are designed for long-distance travel and facilitate the movement of goods and people across state lines. These highways are critical for interstate commerce and generally provide a faster, more efficient route compared to local roads. The signs are specifically characterized by their unique blue and red shield shape, indicating that they are intended to connect major cities and regions.

In contrast, local traffic routes primarily cater to city structures and neighborhoods and do not have the same designation. Railroad crossing warnings are indicated by a distinct sign featuring a symbol of a railroad, whereas signs indicating state highways serve a different purpose than interstate routes and do not have the same national recognition. Signs marking construction zones often feature orange colors and specific symbols to alert drivers to slow down or be prepared for detours. Therefore, the correct understanding of an interstate route sign is that it signifies a major highway designed for interstate travel, highlighting its critical role in the transportation network.