Nice trucker cam.
Do it have AV out too ?
Asking as 4" are not very much if you are going to use it as a aid in situational awareness, and you will probably have to use it in PIP mode as you can not reach it to change perspective if the system are at the very top of a truck windscreen.
In Denmark the size of the main unit might be a issue as to whether it would be legal to put on the windscreen, funny enough police are a bit tough on this in regard to truckers, where as local COP programs on TV often have them pull over someone in their car for something, and him having phones and what not on windscreen in places i understand to be illegal, but the person getting no fine for that.
The law here say you cant have anything obstructing the view, so no small thing dangling from rear view mirror, phones / NAV units / toll tags normally accepted mounted at the bottom of the windscreen.
Personally i have my phone dock mounted off fixed glass on driver side door, so it sit very close to A pillar.
