Dipping into the Road Warrior’s mailbag today, we answer the following:

The question: Do you know what the gradual replacement with sidewalk corners has to do with? I’m talking about the yellow plastic squares with raised dots. Does this have something to do with the Americans With Disabilities Act? Thanks. Ryan, Santa Rosa

The answer, from Santa Rosa’s traffic engineer, Rob Sprinkle: Yes. ADA requires that any overlay or street reconstruction project also replaces the curb ramps to comply with the current regulations. These include the tactile or truncated domes that enable visually impaired pedestrians to know when they are entering the street.