Today I was playing on a map called "highway 95," and something immediately felt off when I looked at the minimap. The highway runs east-west. For anyone familiar with the Interstate Highway System's numbering conventions, this is a significant error that breaks immersion.
The Interstate Highway System's numbering scheme assigns even numbers to east-west highways and odd numbers to north-south highways. This convention has been in place since the Federal Aid Highway Act of 1956 and applies uniformly across the network. This is basic infrastructure knowledge that anyone working on a map for the United States should verify.
The system has additional layers of specificity. Major cross-country interstates use numbers ending in zero or five, with I-95 designated as the farthest east major north-south interstate route. Odd-numbered interstates increase from west to east, placing I-5 on the West Coast and I-95 on the East Coast. This creates a navigable grid where the number itself conveys geographical information.
Interstate 95 runs from Miami, Florida, to the Houlton-Woodstock Border Crossing between Maine and New Brunswick, Canada, spanning 1,906 miles as the longest north-south Interstate in the system. The route's north-south orientation isn't incidental—it functions as the principal road link between major Eastern Seaboard cities, connecting Miami, Jacksonville, Savannah, Richmond, Washington D.C., Baltimore, Philadelphia, New York City, Boston, and Portland along a vertical axis. The highway passes through 15 states, serves 110 million people, and facilitates 40 percent of the country's GDP. Its traffic patterns, auxiliary routes, and infrastructure planning all reflect its north-south alignment.
The system's internal consistency extends throughout the network. Three-digit auxiliary interstates use their last two digits to indicate their parent route, which is why I-95 has associated routes like I-295, I-395, I-495, and I-595—all of which maintain north-south or circumferential orientations relative to their parent highway. Mileage markers on odd-numbered interstates increase from south to north, while even-numbered routes increase from west to east. This standardization allows for consistent navigation across state boundaries and enables systems like distance-based exit numbering.
When I see "Highway 95" oriented east-west in the game, it creates cognitive dissonance because the designation "95" immediately signals "eastern seaboard, north-south". If other numbered highways exist in the game world, this breaks the implied numbering logic. This is a fundamental worldbuilding flaw.
For an east-west highway, the developers should have used even numbering. Interstate 10 is the southernmost major east-west route running through southern states. Interstate 40 is the mid-south corridor through Tennessee, Oklahoma, and Texas. Interstate 70 is the central corridor from Maryland through Utah. Interstate 80 is the northern corridor from New York through California. Interstate 90 is the northernmost route from Massachusetts through Washington. Any of these would maintain geographical plausibility. Alternatively, they could have oriented the map north-south and kept the "95" designation.
The Interstate numbering system is a fundamental part of infrastructure literacy. The system was established to create a rational, coordinated transportation network, and its conventions are deeply ingrained in how everyone can navigate and conceptualize geography. This should have been caught during development. The highway needs to be reoriented north-south or renumbered to an appropriate even-numbered designation.