Highway numbers are preferred over regular street names in situations where the highway numbers are never used. In these cases, residents often do not know the highway numbers. The highway numbers are not posted at most intersections, so they would not be useful for navigation.
Consider the images below of parts of Boston and Cambridge in Massachusetts.
In the Boston image:
- Massachusetts Ave is labeled 2A
- Commonwealth Ave is labeled 2 (and 20 west of Kenmore Square outside the screenshot)
- Huntington Ave is labeled 9 (it does have a street name in the image, but one zoom level out returns to just 9)
- Columbus Ave is labeled 28
In the Cambridge image, Massachusetts Ave from MIT to Harvard is just labeled 2A.
The lack of street names persists to pretty low zoom levels. The third image is zoomed in from the first Boston image. In it:
- Massachusetts Ave and Commonwealth Ave are still labeled 2 and 2A
- Other major streets like Boylston and Newbury remain unlabeled.
- Fairfield and Hereford streets are unlabeled.
The preference for highway numbers is most relevant. The lack of names in general is similar to https://kagifeedback.org/d/8256-missing-street-names



Street names should be displayed in addition to highway numbers