Remove the curbs by gently shaving/sloping each avenue to the midpoint of the street. The street would look like a shallow "V", with all drainage going to multiple storm drains in the MIDDLE of the street. Sidewalks/parking spaces/bike lanes/auto lanes would be demarcated by colored concrete. The absence of a curb would make coming/going much easier/safer for pedestrians & bicyclists. (Have you ever watched as somebody's head snapped back as he stepped off a curb?) Bollards would further demarcate parking spaces from sidewalk usage. These bollards might even be designed for easy pop-out removal (using a special tool) to make snow removal a lot easier during winter months. Use colored concrete for the lines that separate traffic lanes, also ...something that really pops and contrasts sharply with the driving surface. (Bright white colored concrete lines against a teal road surface???) The perennial problem of disappearing/expensive traffic lines would be a thing of the past. Install electric heating elements under the colored sidewalk surfaces to melt winter ice - energy provided by solar panels mounted along these walks.