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Berkeley study finds self-driving electric taxi fleets in Manhattan would deliver significant cost and environmental benefits

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Using models they built and data from more than 10 million taxi trips in New York City, they found that the cost of service provided by a fleet of shared automated electric vehicles (SAEVs) would be $0.29-$0.61 per revenue mile—an order of magnitude lower than the cost of service of present-day Manhattan taxis and $0.05–$0.08/mi

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MIT CSAIL, Cornell study finds rides-sharing theoretically could cut taxi traffic in NYC by 75%

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A new modeling study by a team from MIT CSAIL (Computer Science and Artificial Intelligence Laboratory) and Cornell suggests that using ride-sharing from companies like Uber and Lyft theoretically could reduce the number of taxis on the road in New York City by 75% without significantly impacting travel time. —Daniela Rus.

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Wisk unveils autonomous four-seat eVTOL air taxi; Generation 6

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Wisk Aero, an Advanced Air Mobility (AAM) company, revealed the first self-flying, all-electric, four-passenger vertical takeoff and landing (eVTOL) air taxi. A larger passenger cabin with 4 seats and ample storage for baggage and personal carry-on items, making it one of the most versatile air taxis in the market.

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Study finds ride-sharing companies biggest contributors to growing traffic congestion in San Francisco

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In 2016, TNCs were 15% of all intra-San Francisco vehicle trips, which is 12 times the number of taxi trips, while in New York in 2016, TNC ridership equaled that of yellow cab and doubled annually between 2014 and 2016. TNCs and taxis deadhead to look for fares or reposition before or after a paid trip. —Erhardt.

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CARB: ridesharing vehicle fleet CO2/PMT in 2018 approximately 50% higher than the statewide passenger vehicle fleet average

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The California Air Resources Board (CARB) has released the 2018 Base-year Emissions Inventory Report , as required by Senate Bill 1014 (SB 1014, California Clean Miles Standard). TNCs provide on-demand ride services where rides are arranged online to connect a passenger with drivers using their personal vehicles—e.g.,

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Study suggests high-mileage light-duty fleets contribute higher emissions and emissions share than expected

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One segment of the on-road fleet that is believed to drive more miles and consume more fuel than the average fleet vehicle is livery (for-hire) vehicles, such as taxis and limousines. Livery fleets have changed significantly in the past decade, with many city fleets now featuring large numbers of hybrid and alternatively fueled vehicles.

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Swiss team finds particle emissions from aircraft turbine engines at ground-idle induce oxidative stress in bronchial cells

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Thus, the researchers were able to deposit an aerosol directly on human lung cells, which would not have been possible in an experiment with human test persons for ethical reasons. Moreover, the particles were analyzed for their physico-chemical and structural properties to examine possible links with the effects of the particles.

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