>> 21651. (a)
>>
>> Section on divided highways. It's a separate road.

Scott en Aztlán wrote:
> In that case, it's a separate TWO-LANE road (since there's one HOV
> lane on the other side) and CVC 21656 applies:
>
> 21656. On a two-lane highway where passing is unsafe because of
> traffic in the opposite direction or other conditions, a slow-moving
> vehicle, including a passenger vehicle, behind which five or more
> vehicles are formed in line, shall turn off the roadway at the nearest
> place designated as a turnout by signs erected by the authority having
> jurisdiction over the highway, or wherever sufficient area for a safe
> turnout exists, in order to permit the vehicles following it to
> proceed. As used in this section a slow-moving vehicle is one which is
> proceeding at a rate of speed less than the normal flow of traffic at
> the particular time and place.

This is unlikely ever to apply, since I've never seen a turnout on a
separated HOV roadway. (The permitted entry/exit places are not
turnouts; when you get to one, it ceases to be a two lane highway.)