Bicycle Austin forum

Found it.  Here is the relevant part.  One issue is, is a bike a 'vehicle'

    (d)  An operator of a vehicle facing only a steady red signal
shall stop at a clearly marked stop line.  In the absence of a stop
line, the operator shall stop before entering the crosswalk on the
near side of the intersection.  A vehicle that is not turning shall
remain standing until an indication to proceed is shown.  After
stopping, standing until the intersection may be entered safely,
and yielding right-of-way to pedestrians lawfully in an adjacent
crosswalk and other traffic lawfully using the intersection, the
operator may:
        (1)  turn right;  or                                                         
        (2)  turn left, if the intersecting streets are both
one-way streets and a left turn is permissible.
    (e)  An operator of a vehicle facing a steady yellow signal
is warned by that signal that:
        (1)  movement authorized by a green signal is being
terminated;  or         
        (2)  a red signal is to be given.                                             
    (f)  The Texas Transportation Commission, a municipal
authority, or the commissioners court of a county may prohibit
within the entity's jurisdiction a turn by an operator of a vehicle
facing a steady red signal by posting notice at the intersection
that the turn is prohibited.
    (g)  This section applies to an official traffic-control
signal placed and maintained at a place other than an intersection,
except for a provision that by its nature cannot apply.  A required
stop shall be made at a sign or marking on the pavement indicating
where the stop shall be made.  In the absence of such a sign or
marking, the stop shall be made at the signal.
    (h)  The obligations imposed by this section apply to an
operator of a streetcar in the same manner they apply to the
operator of a vehicle.
    (i)  An operator of a vehicle facing a traffic-control signal
that does not display an indication in any of the signal heads shall
stop as provided by Section 544.010 as if the intersection had a
stop sign.