Go to any medieval European city and you will see what streets looked like before the advent of the car: lovely, small narrow lanes, intimate, and undisputedly human-scale. We have very few cities in the US where you can find streets like this. For the most part what you see is streets that have been designed with the car in mind—at a large scale for a fast speed. In my native San Francisco, we are making the streets safer for walking and biking by widening sidewalks, turning car lanes into bike lanes, and slowing down the cars. We are working with the streets we have; a typical San Francisco street is anywhere from 60 to 80 feet (18 to 24 meters) wide, as compared with a medieval, pre-car street which is more like 10 to 20 feet (3 to 6 meters) wide. As an urban designer, I work on lots of projects where we take large parcels of land and subdivide them into blocks by introducing new streets. These new streets are a rare opportunity to take a fresh look at the kinds of car-oriented roads that we are used to, and instead try to design streets that prioritize the safety and comfort of pedestrians. These projects give us a chance to design streets that are just for people. Imagine that we made these people-only streets into narrow, medieval-style lanes that are intimate and human-scaled. But even as we try to design streets that might not ever see a single car, we find that the modern street design has become so much more than just places for walking or driving. There are therefore a number of things for socially-minded designers to consider, beyond the commonly talked about pedestrian-car dichotomy.
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