bicycle
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The issue: In large cities, there are many perils for pedestrians: cars, bicycles, motorcycles, horses, etc. Even the sidewalk is not a safe zone from scooters and bicycles! At night, the problems are even worse, since pedestrians are generally un-illuminated and are frequently wearing all-black coats in the winter months. Proposal: Since many commuters carry…
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The issue: One ever-present hazard for bicyclists is the possibility of being “doored”—hit by a suddenly-opened driver’s side door of a parked car. A similar issue confounds carpool passengers: when exiting a full vehicle, the driver’s-side passenger must open the door directly into traffic (since they cannot exit on the curb side). This presents the…
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Background: Taxis in many cities operate under what is called a “medallion system” (Figure 1), whereby the supply of taxis is limited by a fixed quantity of tokens (“medallions”) that are issued in controlled quantities by the city. Proposal: For some reason, almost nothing else is regulated in this manner. But there are other services…
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The issue: Traffic laws are made with the idea that everyone is driving a car. In the US, four-way stops are all over the place, at almost every intersection. In a car, this isn’t a huge burden, since it requires no human effort to stop and then accelerate again. But with a bike, this requires…
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