[ThePhysicist]

I think if the vehicle is only able to drive 25 mph it is not allowed to drive on the freeway, otherwise one would need to allow tractors by the same argument.

In most European countries there is a minimum speed requirement when driving on thr motorway (usually between 60 - 80 km/h), and sometimes there are even lane-specific speed limits (e.g. left lane requires at least 110 km/h). All that is only relevant if the traffic actually allows you to go that fast of course.

[Piskvorrr]

It was not driving on a freeway. It was going 25 in a 35 zone, taking one whole lane out of 3 in that direction. Shocking, SHOCKING! ;o) https://www.google.com/maps/@37.3955848,-122.1017317,3a,75y,...

[cyber]

Yes, it was: http://www.leginfo.ca.gov/cgi-bin/displaycode?section=veh&gr... states:

"360. "Highway" is a way or place of whatever nature, publicly maintained and open to the use of the public for purposes of vehicular travel. Highway includes street."

https://www.dmv.ca.gov/portal/dmv/detail/pubs/vctop/vc/d11/c...

"22400. (a) No person shall drive upon a highway at such a slow speed as to impede or block the normal and reasonable movement of traffic, unless the reduced speed is necessary for safe operation, because of a grade, or in compliance with law."

Yes, shocking. (Also, El Camino is a State Route, I'll let you look that one up.)

[webjprgm]

El Camino is annoying enough to drive on that it really would be quite frustrating. Depending on the time of day.

[PinguTS]

In Germany the 60 km/h is not required in terms of minimum speed. It is required in terms, that the vehicle is capable of driving that speed.

My Hanomag A-L 28 is a maximum speed in the papers of 78 km/h. As such I am allowed on the Autobahn, even that I am driving only 50 km/h or sometimes 40 km/h on a hill. Because each hill does slow down a Hanomag considerably.

[throwketchup]

Tractors are allowed. The magic phrase you need to type into google to get the relevant results is "farm implement."