On reading the title, I was immediately going to answer intersection—until I saw that it was already in the question.
I can't think of a different word (other than intersection or crossroads) that is literally about roads, and you've already used hub in your question.
I can, however, provide two related words—as defined at Merriam-Webster:
1 : CONNECTION, LINK
// the nexus between teachers and students
also : a causal link
// the nexus between poverty and crime
2 : a connected group or series
// a nexus of theories
// a nexus of relationships
3 : CENTER, FOCUS
// The bookstore has become something of a nexus for the downtown neighborhood.
1 : a central and often foundational part usually distinct from the enveloping part by a difference in nature
// the core of the city