No serious dealer calls himself a "roadman" that stuff is for kids who listen to too much drill let's be honest mate.
Most serious smack and crack dealers are older blokes selling to support their habit, they're the reliable ones who treat it like a business transaction instead of making a big show of being all hard.
Of course the supply comes from a crew but those crews are rarely if ever directly linked to street level dealers. They sell in bulk only. Whoever buys it is then the one who packs it up and sells it on the street, they are separate from the crews moving weight. This is true for every drug out there except occasionally weed where a dealer might be getting it direct from a grow. But when it comes to light and dark, no street dealer is directly associated with a crew selling bulk, they are a customer of them sure but that's it.