What is Green Transportation?

The word ‘Green’ is being overused and isn’t very specific, but it’s a widely used adjective seeming to mean cleaner ways or products. This web site is about exploring the intersection of “Green” and “Transportation” but goes beyond simply cleaner ways to transport ourselves around. A better phrase than ‘Green…

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Questions about Hydraulic Fracturing

Why isn’t horizontal fracturing technology used more globally? The US has just over half of the world’s drilling rig fleet, and it’s difficult to move large capital assets like that between countries (both for physical reasons and accounting/customs reasons) Many countries, such as France, have imposed fracking moratoriums for non-scientific…

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Bus Rapid Transit

Bus rapid transit refers to a variety of public transportation systems using buses to provide faster, more efficient service than an ordinary bus line. Often it’s achieved by improving existing bus infrastructure, vehicles and scheduling. The goal of these systems is to approach the service quality of rail transit while…

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Carpooling or ride-sharing services or websites

Avego – real time ridesharing for the iPhone generation “Avego Shared Transport enables private cars to become part of the public transport network by providing a marketplace for drivers to offer their empty seats to others in real time. Avego’s iPhone app dynamically matches drivers with riders, provides real-time passenger…

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List of car-sharing systems

  DriveNow – BMW’s car sharing program DriveNow is BMW’s “premium car sharing program” meaning that the program, unsurprisingly, focuses on applying the car sharing model to premium or luxury cars. That segment is, after all, BMW’s bread and butter. DriveNow was launched in Germany in June 2011 as a…

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Vanpooling

Vanpools are an element of the transit system that allow groups of people to share the ride similar to a carpool, but on a larger scale with concurrent savings in fuel and vehicle operating costs. Vanpools are the most cost effective mode of public transportation in the United States and…

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Estimating the Energy Consumption Impact of Casual Carpooling

A paper presented at the Transportation Research Board’s 89th Annual Meeting in January 2010, //Estimating the Energy Consumption Impact of Casual Carpooling// (PDF linked below), estimated that San Francisco saves almost 1 million gallons of gasoline and associated emissions each year because of the operation of the informal flexible carpooling…

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Passenger Density

Another way to explain this is passengers per square-mile of road surface. Each vehicle type and speed has a given passengers per square-mile of road surface. For example an individually driven car traveling at highway speed is one person per cars, and the cars are supposed to spread out for…

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Flexible Carpooling

The biggest reason people give for not carpooling is that they have varying schedules. With a normal carpool you’re stuck with the schedule of a specific carpool partnership. Flexible carpooling doesn’t have the ‘pre-arrangement’ that all other carpooling systems need, giving flexibility to accommodate varying schedules. It is like there…

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Shared Transportation, Carpooling, etc

Shared transport is a term for describing a demand-driven vehicle-sharing arrangement, in which travelers share a vehicle either simultaneously (e.g. ride-sharing) or over time (e.g. carsharing or bike sharing), and in the process share the cost of the journey, thereby creating a hybrid between private vehicle use and mass or…

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Transit Access and Zero-Vehicle Households

A “Zero-Vehicle household” is one that doesn’t own a private vehicle (a.k.a. car).  Transit Access and Zero-Vehicle Households While there are a couple hundred million private and commercial registered in the U.S., and over three-quarters of Americans commute to work driving solo in their car, and another 10 percent carpool,…

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