Question: Some signalized intersections do not have separate or modern pedestrian signal heads at marked or un-marked crosswalks. As a Pedestrian using a signalized intersection, would you know what to do when facing circular green, yellow or red arrow indications, or flashing indications?

Answer: A pedestrian should only always cross on a circular green, flashing red or flashing yellow signal indication, they may only cross on other indications if they are directed by a pedestrian signal or other device, however they still must yield to vehicle that are already  in the intersection at the beginning of the green signal. the MUTCD Section 4D.04 and pages 451-452 provides standards for their use.

Pedestrians facing a CIRCULAR GREEN signal indication, unless otherwise directed by a pedestrian signal indication or other traffic control device, are permitted to proceed across the roadway within any marked or unmarked associated crosswalks. The pedestrian shall yield the right-of-way to vehicles lawfully within the intersection or so close as to create an immediate hazard at the time that the green signal indication is first displayed. 

Pedestrians facing a GREEN ARROW signal indication, unless otherwise directed by a pedestrian signal indication or other traffic control device, shall not cross the roadway. 

Pedestrians facing a steady CIRCULAR YELLOW or YELLOW ARROW signal indication, unless otherwise directed by a pedestrian signal indication or other traffic control device shall not start to cross the roadway. 

Unless otherwise directed by a pedestrian signal indication or other traffic control device, pedestrians facing a steady CIRCULAR RED or steady RED ARROW signal indication shall not enter the roadway. 

Pedestrians facing any flashing yellow signal indication at an intersection, unless otherwise directed by a pedestrian signal indication or other traffic control device, are permitted to proceed across the roadway within any marked or unmarked associated crosswalk. Pedestrians shall yield the right-of-way to vehicles lawfully within the intersection at the time that the flashing red signal indication is first displayed.