walking signs

In class we were discussing the way in which signs and objects around the city can be interpreted through implicit and explicit understandings. When Alex and I went for a walk around uni we noticed a small arrow on the ground pointing in one direction. The sidewalk as a walkway is explicitly understood as a 2 way walkway as people are allowed to walk in either directions. However with the placement of this arrow on the ground there is an implicit idea implied that the sidewalk is a one way walkway and that people must walk in the direction of the arrow shown. The image above quite interestingly highlights this idea as people do not notice the arrow and therefore go against this implicit intention.