Traffic signs go up when the law requires them, or an engineer does the math and decides it’s the right thing for that location. Related Stories from Bellingham Herald Rules of the Road ...

LOGAN, Ohio -- Like Burma-Shave signs for the soul, the Ten Commandments pop up, one by one, visible to motorists along a stretch of rural road. Respect and obey Mom and Dad. Do not take another's ...

Road Rules not only allows AV operators to get exact locations of traffic signs and other roadway infrastructure from cities, but feeds the information back to cities in a symbiotic relationship.