Yes, it was:
<a href="http:&#x2F;&#x2F;www.leginfo.ca.gov&#x2F;cgi-bin&#x2F;displaycode?section=veh&amp;group=00001-01000&amp;file=100-680" rel="nofollow">http:&#x2F;&#x2F;www.leginfo.ca.gov&#x2F;cgi-bin&#x2F;displaycode?section=veh&amp;gr...</a> states:<p>&quot;360.  &quot;Highway&quot; 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.&quot;<p><a href="https:&#x2F;&#x2F;www.dmv.ca.gov&#x2F;portal&#x2F;dmv&#x2F;detail&#x2F;pubs&#x2F;vctop&#x2F;vc&#x2F;d11&#x2F;c7&#x2F;a2&#x2F;22400" rel="nofollow">https:&#x2F;&#x2F;www.dmv.ca.gov&#x2F;portal&#x2F;dmv&#x2F;detail&#x2F;pubs&#x2F;vctop&#x2F;vc&#x2F;d11&#x2F;c...</a><p>&quot;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.&quot;<p>Yes, shocking. (Also, El Camino is a State Route, I&#x27;ll let you look that one up.)