Nice install, I'm Originally from HarCo Maryland. I also believe if you are a Fire/EMS Captain and Above in the state of Maryland, They may use lights on there POV's
§ 22-218. Audible and visual signals on vehicles.
(a) Sirens, exhaust whistles, or bells on emergency vehicles.- Every emergency vehicle, in addition to any other equipment and distinctive markings required by this subtitle, shall be equipped with a siren, exhaust whistle, or bell capable of giving an audible signal.
(ii) In each volunteer fire company, no more than five of the following officers may have their privately owned vehicles equipped with red lights or signal devices which may be displayed only while on route to or at the scene of an emergency:
1. The fire chief or the highest ranking fireline officer;
2. One or more of the assistant chiefs or deputy chiefs, whichever rank is second in command; and
3. The emergency medical services commander.
(iii) 1. The fire police of each volunteer fire company may have their privately owned vehicles equipped with red lights or signal devices designed to emit an oscillating, rotating, blinking, or other type of emission of light.
2. The lights or signal devices may be flashed or oscillated or otherwise used only while the vehicle is at the scene of an accident, flood, or other emergency to which the volunteer fire company is responding.