This street photo is spectacular for many reasons.
For me, it come together because of many photographic aspects:
1) It is genuine street photo. It clearly is not staged. 2) Two themes going on: Ties and color. 3) Geometry: the lines from the street signage and the vertical ties 4) Body movement: Red tie guy with left arm forward and yellow tie man with left arm back = nice contrast! 5) Color: Red tie, red street sign, and red car. Yellow tie, yellow street signage, yellow building. Nice contrast again! 6) Some much going on with facial expressions!