A while back we wrote about the 10 ways that Copenhageners wait for red lights in our Red Light Posture Series.
The example, above, is quite clearly Posture #2.
Although it is Posture #2 with an interesting added detail. Balancing on tip-toes but gently resting the side of the foot against the pedal for extra stability. Most people performing Posture #2 choose to just place the tip-toes farther off to the side but on rare occasions you get to see this elegant variation.
See the whole Red Light Posture Series here.