You're not applying a "no-ramps" rule, Rajvik. Though the definition of that is kind of hazy. Take the 101-134-170 interchange in North Hollywood. Should I consider the 101 to be taking a ramp here to stay on the same-numbered freeway or not? The majority of lanes curve, but it sure looks like a standard interchange. Notably the names are different from the numbers here -- the Ventura Freeway goes east-west, the Hollywood Freeway goes north-south. The 170 leaves north, the 134 leaves east, and the 101 has the west and south branches. (Named freeways is the most likely reason we use the definite pronoun on the numbered version as well down here.)
"Kitto daijoubu da yo." - Sakura Kinomoto