Meaning of the Flashing Don't Walk at Traffic Signals - Pedestrian Countdown Timer Model Ordinance from Salt Lake City

What does it mean? It's all French to me. 

At the Workshop on Pedestrian Safety at Midblock Crossings I learned about the following ordinance of Salt Lake City, which was an idea I had that I think represents a better representation of what the Flashing Don't Walk means with the Countdown timers. 

Here's the complete section from their Code.

SECTION 20.  That Section 12.32.050, Salt Lake City Code, pertaining to pedestrian “walk” and “don’t walk” signals be, and the same hereby is, repealed.

            SECTION 21.  That Section 12.32.055, pertaining to pedestrian signal indications, be, and is hereby enacted to read as follows:

12.32.055 Pedestrian Signal Indications.

Whenever a pedestrian signal is in place and operating, the illuminated words or symbols shall indicate and govern pedestrians as follows:

A.            A steady white WALK or WALKING PERSON (symbolizing WALK) signal indication means that, exercising due caution, a pedestrian facing the signal indication may start to cross the roadway in the direction of the signal indication.

B.            A flashing orange DONT WALK or UPRAISED HAND (symbolizing DONT WALK) signal indication means that a pedestrian shall not start to cross the roadway in the direction of the signal indication, but that any pedestrian who has already started to cross on a steady white WALK or WALKING PERSON (symbolizing WALK) signal indication may complete crossing the roadway.

C.            A steady orange DONT WALK or UPRAISED HAND (symbolizing DONT WALK) signal indication means that a pedestrian shall not enter the roadway in the direction of the signal indication.

                D.  A COUNTDOWN CLOCK (displaying time in seconds remaining in the pedestrian crossing phase) in conjunction with the flashing orange UPRAISED HAND means that a pedestrian facing the signal indication may start to cross the roadway in the direction of the signal indication, but only if such pedestrian is able to safely walk completely across the street or to a safety island before the COUNTDOWN CLOCK shows no remaining time.