Connecting Sacramento

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Connecting Sacramento is the first study to incorporate both accessibility analysis and tripmaking data, including data from multiple sources, and assess how they can be used together to guide transportation- and land use-related decisions. This study focused specifically on opportunities to improve first- and last-mile connections to light rail transit in Sacramento, but its findings are widely applicable. Read More >

Accessibility in practice (SSTI and Virginia Office of Intermodal Planning and Investment, 2017)

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Planning agencies and transportation decision makers often talk about the importance of improving access to destinations, but they rarely have the tools or resources to measure accessibility and incorporate those metrics into decision making. This report guides agencies through that process. Read More >

Effects of Parking Provision on Automobile Use in Cities: Inferring Causality (McCahill, Garrick, Atkinson-Palombo and Polinski, 2015)

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Automobile use has been on the rise in cities for nearly a century and so has the supply of parking. Because driving often seems unavoidable, policymakers, developers and the public push endlessly for more parking to meet demand. That push, however, might only be making matters worse. SSTI Senior Associate Chris McCahill’s research suggests that abundant parking in cities causes people to drive more, shedding important light on the question of cause and effect. Read More >


FEATURED RESOURCE

Trip-making data, TDM, and connectivity in Northern Virginia (SSTI and Michael Baker International, 2016)

Commercially available GPS data offers valuable new insight about trip origins, destinations, and routes, including short trips that travel demand models often cannot capture. Using this data, SSTI worked with Michael Baker International, the Virginia DOT, and local stakeholders to identify opportunities for managing travel demand and improving connectivity throughout Northern Virginia. This final report describes the full data set and 17 selected case studies, along with recommended projects and policies, estimated costs, and benefits for each. More Resources...

NEWS

FHWA issues new guidance on pedestrian crossings

Despite many DOTs’ attention to complete streets, pedestrian fatalities are spiking nationwide. One problem is that, even with good sidewalks, in many places controlled crossings are widely spaced, and uncontrolled crossings can be quite dangerous. FHWA’s Every Day Counts program has attacked this problem, last month releasing a clear and concise guide to improving midblock and other uncontrolled crossings. The guide lays out a systematic process for identifying and addressing hazards using several countermeasures. Read More >

Increases in vehicle ownership enlighten southern California’s decrease in public transit ridership

Although national transit ridership has remained steady over the last decade, ridership in Southern California has been on the decline. The Southern California Association of Governments released a report offering explanations for why transit ridership has been decreasing in the six counties participating in the association. Read More >

Shared mobility principles for the rapidly approaching AV era

The Shared Mobility Principles for Livable Cities, launched in 2017 and spearheaded by the founder of ZipCar, has now added corporate signers to its ranks. At the same time, one car manufacturer has announced plans to have fully autonomous vehicles on the road as rideshare vehicles by 2019, signaling that the autonomous vehicle era is rapidly approaching. Read More >

Mainstreaming transportation and land use modeling within Oregon DOT

States interested in modeling transportation and land use can now learn from Oregon’s experience building its Statewide Integrated Model (SWIM), thanks to a new study published in the Journal of Transport and Land Use. The model, now used in ODOT’s regular operations, grew out of its decades-long Transportation and Land Use Model Integration Program (TLUMIP), launched in the late 1990s. Several keys to its success were committed staff, a sharp focus on meeting agency needs, and the ability to adapt as those needs changed. Read More >

Washington State bill will require trucks serving ports to be cleaner

The Washington State legislature and the ports of Tacoma and Seattle are struggling to balance the air quality and health concerns of neighborhoods close to port facilities with protests from independent truckers who cannot afford to upgrade their equipment. The deadline to require all trucks serving the port to have newer, cleaner engines has twice been extended. Other states have tried to set rules for clean engines, with varying degrees of success. Read More >

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