Modernizing Mitigation: A Demand-Centered Approach (SSTI, September 2018)

SF TDM measures

This report proposes a new approach to assessing and responding to land use-driven transportation impacts, called “modern mitigation.” Instead of relying on auto capacity improvements as a first resort, this approach builds on practice around transportation demand management (TDM) to make traffic reduction the priority. Based on programs dating to the 1990s in several cities, a modern mitigation program requires certain new land uses to achieve TDM credits. Read More >

U.S. cities and developers beleaguered by too much parking, Mortgage Bankers report finds

Des moines parking

There are 83,141 households in the city of Des Moines, and 1.6 million parking stalls. Even allowing that some of those stalls are occupied by commuters, that’s a pretty staggering disparity. And even accounting for commuters, peak parking occupancy rates are only 65 percent downtown. These are some of the eye-opening findings from a new Mortgage Bankers Association report on parking supply in American cities. The report argues that localities should do their own parking inventories rather than rely on rules of thumb for parking needs and risk squandering resources. 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 >


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. More Resources...


NTSB priority: Roadway speed management

When it comes to speed, delay and congestion usually get more attention than the flip-side problem of excessive speed. Under statute, for example, the federal government requires agencies to track speed reliability and delay. There is no similar requirement for tracking excessive speed, even though the data set provided for monitoring slow traffic could be used for fast traffic as well. However, the National Transportation Safety Board’s new 2019-2020 Most Wanted List, which it identifies as its “premier advocacy tool” in advancing transportation safety improvements, includes highway speed management in its Top 10 list. Read More >

Washington, DC, improves parking and traffic with “asset-lite” pricing program

Washington, DC, just released the results from its four-year pilot program, parkDC, which applied dynamic pricing for on-street parking in Penn Quarter and Chinatown. Based on its success, the city is now working to expand the program beyond the pilot area. The program, which built upon the earlier success of those like San Francisco’s SFpark, achieved similar results with fewer resources. Read More >

New study finds that road closures can alleviate congestion in dense urban areas

Historically, transportation policy addressing vehicle congestion has entailed increasing road capacity. However, research consistently reveals that these policies have the opposite effect. In fact, a new study reveals that cities may be able to improve vehicle travel times by closing certain road segments completely. Using the theoretical framework of the Braess Paradox, the study’s researchers model how blocking off selective streets in downtown Winnipeg can reduce overall vehicle travel times, a change which in turn enables new car-free spaces to be reclaimed as parks or pedestrian plazas. Read More >

Can road pricing be used to make LA’s transportation system more equitable?

California nonprofit TransForm and the Natural Resources Defense Council (NRDC) recently released a new report and toolkit with guidance for bringing equity into the implementation of congestion pricing. While conversations about congestion pricing and equity often focus on minimizing the negative—reducing disproportionate impacts to low-income residents—the report authors argue a different paradigm: that pricing strategies can be used to improve the equity of transportation systems overall by harnessing the potential efficiencies to address systemic inequities. Read More >

Evidence from Toronto: Well-designed bike lanes encourage cycling, improve safety for all

A new report from the City of Toronto adds further evidence to the notion that improvements to the cycling network can dramatically increase cycling mode share and actual numbers, while improving safety for all road users, with little to no degradation of motorist level of service. Crashes for both bicyclists and motor vehicles declined after the installation of protected bike lanes; additional travel times for motorists changed minimally, and the number of bicyclists using the street went up 1000 percent. Read More >

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