"Policy goals" won't be enough to protect bicyclists once the cars start driving themselves. Strong standards will be necessary to govern the interactions between cars and bikes in an autonomous future.
In many cities, stormwater and sewage water are collected in the same sewer. As a result, good rainwater is combined with dirty sewage water. Overflows can create major problems for cities. But avoiding those problems is not exactly easy.
Portland's "Green Streets" program is becoming a new tourist attraction in the city, which officials from other cities are visiting to learn from the Pacific Northwest's model water treatment infrastructure.