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Signals: Integrating Space and Time

A given street’s potential to accomodate bikes, buses, cars, and pedestrians is limited by two integral factors: space and time. Improving bicycle and pedestrian mobility, while balancing the needs of peak vehicular throughput, requires challenging the conventional wisdom of traffic signal design (“time”) and lane configuration (“space”). Traditional models that use peak hour “level of service,” delay, and “volume/capacity ratio” as key design factors often result in poor intersection design in the urban context. How can we rethink street and intersection design using signalization strategies? What new metrics should we be using? How do we best communicate the trade-offs to decision makers and the general public? Signals: Integrating Space and Time presents an opportunity to learn what creative signalization strategies traffic engineers and planners in US cities are employing to re-balance and reconfigure their rights of way, without gridlocking their system.