If on/off ramp design and the prevalence of 2 lane HOV's ending and merging into 3 lanes is any indication, Virginia DOT engineers aren't.
My pet peeve on highway design is a closing radius on-ramp, where the ramp design forces the driver to slow down when he should be able to accelerate to merge into oncoming traffic.
The other thing is that the driving section of our state test for a driver's license never goes near a high speed road, highway or have any requirement to successfully make a merge. All the candidate does is drive around the block wherever the local DMV office is located. IOW, all the teenage darlings have a right to drive. It most certainly is no longer a privilege.
The result of this untaught, untested skill is a plethora of drivers who creep to the end of the merge lane begging for mercy from oncoming traffic and stop, as described above, and the rude me-first types who, wanting to exit onto an off-ramp, pass and then wedge in front of a driver trying to leave the on-ramp, then slam on brakes in front of that poor schlub who needs to accelerate from the on-ramp into mainline traffic.
Part of this is due to the awful design of the above aptly-named "Cross of Death", but if the exiting driver would swallow her pride, slow down and drop in behind the on-ramp merging driver instead of cutting in front, the exchange would be much smoother and safer.