Setup for a dash cam.

[Ralf Mardorf]

Keep in mind that apart from legal issues [*] it's much more important
that social interaction is disturbed by all those people filming
anything and everything with dash cams, smart phones and drones.
Especially filming traffic increases aggression. We lose more and
more faith in social graces by recording anything and everything for
documentation/close reasoning. Social behaviour isn't based on 0 and 1,
it rests upon 0, 0.000000000001, 0.25, 0.5, 0.75, 0.9999999999999999
and 1. Only socially incompetent idiots are using dash cams.

[*]
https://en.wikipedia.org/wiki/Dashcam#Legality

Legality

While dashcams are gaining in popularity as a way of protection against
distortion of facts, they also attract negative attitudes for privacy
concerns. This is also reflected in the laws of different countries in
different and conflicting ways:

-   Popular in many parts of Asia, Europe (particularly the U.K.,
France, and Russia, where they are explicitly allowed by regulations
issued in 2009 by the Ministry of the Interior [10]), Australia, and
the U.S.,
-   they are forbidden by law in Austria,[11] where they carry heavy
fines.
-   In Switzerland, their use is strongly discouraged in public space
as they may contravene data protection principles.[12]
-   In Germany,[13] while small cameras for personal use in vehicles
are allowed, posting footage from them on social-media sites is
considered a violation of privacy and thus forbidden. Dashcam footage
may only be used in exceptional cases as evidence in a German court.
-   In Luxembourg, it is not illegal to possess a dashcam but it is
illegal to use one to capture videos or still images in a public place
(which includes in a vehicle on a public road). Recording using a
dashcam may result in a fine or imprisonment.[14]
-   In Australia recording on public roadways is allowed as long as the
recording does not infringe upon one's personal privacy in a way that
may be deemed inappropriate in a court of law.[15]
-   In the United States, at the federal level, "the video taping of
public events is protected under the First Amendment" right.[16]
Videotaping of non-public events and videotaping-related issues,
including sound recording and matters related to time of the day,
venue, manner of recording, privacy concerns, implications on motor
vehicle moving violation issues (such as whether the windshield view is
being blocked), etc., are dealt with at the state level.
  -       In the state of Maryland, for example, it is illegal to
record anybody's voice without their consent, but it is legal to record
without the other party's consent if the non-consenting party does not
have a reasonable expectation of privacy with respect to the
conversation that is being recorded.
  -       In other states, including Illinois and Massachusetts, it is
always illegal regardless of whether or not there is a reasonable
expectation of privacy, and in such states the person doing the
recording would always be in violation of the law.
  -       In Illinois, a law was passed that makes it illegal to record
law enforcement officers even while in the performance of their public
official duties.[17]