The slope
High sides fail first. Pictures lag.
Ruts start at the high shoulder, not the lane middle. Water sits. From a car the road still looks crowned. Shoup faces fail like that.
Prussian blue on a known block shows where the face starves the ink. Pale means collapsed crown. Broadway afternoons hurry it: river wind files the toe while a Tautphaus round still sits in a hatch.
Pale toe plus inky heel means two lanes. Living heel does not buy a dead toe a recrown. Laird scraps the toe and leaves the heel.
One bulge for the whole head averages a ramp with a gutter. This lamp will not.