Hi Jay,  I see you've gotten into mapping.  I have done a lot of mapping in the area as well (including this DMV).

These changes to DMV needs further work as the way you mapped it indicates that there are physical barriers between the lanes.  This can end up confusing GPS systems as they might think you're in a lane that you're not and not realize you can still physically (although not legally) switch lanes.

So if you enjoy doing mapping there are two tags you should learn.  The placement tag and the change tag.

https://wiki.openstreetmap.org/wiki/Key:change

The change lets you set the solid lines for the roads and is useful in a lot of situations like this.

Neither of these tags get visualized in the default web editor (Id) and honestly are easy to tag incorrectly without visualization, so most of us heavy mappers use JOSM with a plugin (Lane and Road attributes) to add and visualize them.

Let me know if you need any help.