Want fewer cars on the roads? Don’t offer parking, research suggests
New research draws a direct line between dedicated parking spots and the number of cars owned among affordable housing residents in San Francisco.
transportation
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How public transportation predicts social media connections in New York City
In New York City, travel time and cost more strongly predict social media connectedness than geographical distance, according to a recent working paper from the National Bureau of Economic Research.
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Cruising into a driverless future: Research on autonomous vehicles
This research roundup looks at automated vehicles, including findings on potential benefits, safety concerns, public opinion and policy implications.
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Amtrak safety, rail transit and Positive Train Control: Research roundup
An updated collection of recent reports, research and analysis relating to Amtrak, rail transit and Positive Train Control.
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Climate change costing billions in extra road repairs
American road engineers are using temperature models that do not consider the warming climate, costing the country billions in early repairs, a new study finds.
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Body camera footage suggests police treat black drivers with less respect
Police officers speak less respectfully to black drivers than white drivers during routine traffic stops, according to a new study from Stanford University researchers.
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Fuel-efficient cars may actually be safer than gas guzzlers
Critics of fuel-efficiency standards have long argued that, by making cars lighter, they make cars more dangerous. A new paper challenges this theory, arguing that they may be saving lives.
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Some seat belt laws may be less effective at reducing traffic deaths
A new study suggests that laws allowing police to directly cite motorists for not wearing seat belts may be less effective than they once were at reducing accident deaths.
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Lead emissions from planes may be costing billions in lost earnings
Airplanes are now the largest source of lead pollution in the United States. Americans hurt by lead exposure may be losing billions in lost wages.
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Drowsy driving and car crashes: How night-shift work contributes to traffic dangers
2016 study published in PNAS that looks at the impact of night-shift work on measures of drowsiness, driving performance and risk for motor vehicle crashes.
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