Merging onto an Interstate

My understanding of the North Carolina law is that the traffic in the RH travel lane near an on ramp must slow down to allow ramp traffic to enter. NC did have "yield" signs at the end of entrance ramps, but most have been removed. Don't you just hate it when the 4 wheeler entering the traffic does not accelerate or drop back so you do not have to change lanes or hit the binders? About the same can be said for 4 wheelers slowly passing you - don't they know what a "passing gear" is?
Catfish