As motorists pass by, a robotic arm mounted to a large pickup truck glides out and paints a crisp white crosswalk, then some arrows. No crew in traffic. No stencils. No overnight shifts. Just one ...

HERE IN HANOVER. THEY’RE CRANKING OUT UP TO 100 SIGNS A DAY, AND THEY LOOK A LOT DIFFERENT NOW THAN THEY USED TO. FROM THE STREET YOU LIVE ON, TO THE HIGHWAY YOU DRIVE TO WORK, AND THE WARNINGS ...