Transmission vs Transmittance

[allanon]

The window tint ("sun-shading") law in Virginia (here and here) and DMV form (here) restrict light "transmittance" through vehicle windows and windshields.

Shouldn't that be "transmission" instead of "transmittance"?

(never mind the threat of perjury)

[Uncle Fester]

Had a favorite sign on a route I frequently traveled that stated:

ONE WAY
DO NOT ENTER
EMERGENCY VEHICLES EXCLUDED