Man gets "raped" by police and medical staff after a routine traffic stop

[Glassunion]

95. In limited circumstances the police can enforce traffic laws on private property.

I've seen it quite a bit where I live. New Mexico's law and ordinance website stinks, so I'm having difficulty searching for the specific code.

Most traffic control signs have a sticker on the back from the DOT or similar entity with jurisdiction. Those are completely enforceable by any LEO, even if located on private property. Here, if the Township, City, County, or State require us to have traffic control (lights, signs, lines, etc...) those signs are provided by the municipality and the police can enforce them.

Another trick that the police can do while on private property, is if the signs, lines and whatnot are wholly owned and installed by the property owner, and if one was to ignore them, they can nab you but the offense is different. They can't get you for running a stop, but they can get you on careless. A lot have mystical language that covers them on private property open to the public. For this you will usually see language like: A person commits the offense of careless driving if the person drives any vehicle upon a highway or other premises described in this section in a manner that endangers or would be likely to endanger any person or property.
The offense described in this section, careless driving, applies on any premises open to the public and is a Class B traffic violation unless commission of the offense contributes to an accident. If commission of the offense contributes to an accident, the offense is a Class A traffic violation. - OR Traffic Code