Connecting Sacramento


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)


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)


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 >


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...


Pedestrian deaths are a systemic problem in the U.S.

Pedestrian deaths hovered around 6,000 in 2017, according to a new report from the Governor’s Highway Safety Association. That’s a slight drop from the previous year but still 45 percent higher than in 2009. Media reports have hyped a handful of theories to explain the recent uptick—namely, distracted cell phone use and marijuana legalization—but years of data from across the U.S. and abroad points to one clear trend. The more we design our communities mainly around the automobile, the more we drive, and the more dangerous roads become. Read More >

Downtown parking: A declining business

What effect do Uber and Lyft have on parking demand in urban areas? Ace Parking has experienced a sizeable drop in demand for parking in the company’s San Diego location. Parking at hotels in San Diego has dropped by five to ten percent; restaurant valet demand has dropped 25 percent, and demand for valet parking at nightclubs has dropped a staggering 50 percent. While the timeline for these declines is unclear, an Ace Parking executive stated that similar or more severe trends have also been seen in the company’s parking operations, which number close to 750 locations around the United States. Read More >

Research finds R1-6 gateway treatment can rival RFFB and PHB lights at pedestrian crossings

Research in Michigan has shown that in-street, yield-to-pedestrian signs can affect both yielding behavior and driver speeds approaching crosswalks to the same degree as installation of a Rectangular Rapid Flashing Beacon (RFFB) or Pedestrian Hybrid Beacon (PHB.) This is good news for communities that want to improve pedestrian safety and access but that are seeking a lower-cost alternative to installed beacons. Read More >

Rochester makes headway in replacing the Inner Loop with a new neighborhood

Rochester, NY, has completed the Inner Loop East highway removal project, bringing the city one step closer to a more vital and connected downtown. The project has opened up six acres of land for new development, and Rochester Mayor Lovely Warren has already endorsed three proposed development projects. Read More >

Big data enables new tool for analyzing and diagnosing traffic congestion

StreetLight Data, which provides trip-making data from mobile devices and smartphone apps, has just launched a new interactive Congestion Analysis tool. The tool lets subscribers identify congested roads by time of day, break down the traffic in terms of trip length, trip purpose, and other characteristics, and then focus on specific strategies to relieve demand. Read More >

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