The only downside is that its traffic includes those absolutely insufferable dorks on bright yellow mopeds. And for some reason, they appear in staggeringly disproportionate numbers. Many times when I've blocked a crossing, the town will seem to have been taken over by a biker gang...of total dweebs on mopeds. It's really obnoxious.
So I went to Assets > VNHRR > Springfield > Scenery > Vehicles and found a file called spawner-Kuju-Bike.bin . After copying it to my desktop for safety, I deleted it.
HOOZAH!! The VNHRR roads are working perfectly fine AND those dorks on mopeds are gone. But now I'm wondering...

And if so, what is the CORRECT way of doing it?
I tried copying some 1957 DeSotos from the Route Objects from WACampbell (acquired from the RWA Lakeside Route) into the same place where I deleted the Kuju moped, making sure to mind what I assume are the proper places for both the GeoPcDx files AND the TgPcDx files. But this did not work. The vehicular traffic on the VNHRR roads still work fine - just no DeSotos.
If that didn't work, with my luck, pressing further runs the risk of somehow upending the entire program and somehow instead start playing a game of "Thermonuclear War" while NORAD, unbeknownst to us all, has been lowered to DEFCON-2 and now I'm Matthew Broderick having to save the world...