Cab/Marker Lights

[pohlease]

http://www.nhtsa.dot.gov/Cars/rules/.../Trlrpstr.html

There is a link that applies to trailers from the National Highway Transportation Safety Administration. The light laws for motor vehicles are the same I just can't find you a similar table. Look near the bottom of the chart for the laws that effect the hummer...

So yes the H2s are required to have marker and clearence lights.