Gasoline prices have clear impacts on development patterns, according to recent research that adds new evidence for the long-term impacts of transportation pricing signals. The new study shows that wage growth and low gas prices contributed to high rates of suburban growth in the 1980s and 1990s, measured in terms of deforestation. Those trends have reversed as gas prices have risen.
land use
Dog owners drive more, but policy and design changes could help lessen the need
By James Hughes We all can identify a walkable neighborhood, whether we live in one or know what we expect to see in one: good sidewalks, connectivity to surrounding areas, and many destinations. But new …
Pedestrians respond to built environment changes, according to study
With consistent growth in most urbanized areas around the world, changes to the built environment to accommodate multimodal travel will become one of our most important adaptations. A recent study from Melbourne, Australia, of pedestrian flows over five years found that built environmental changes accounted for 50-60% of the increase in foot traffic in the downtown region.
Major roads undercut safety benefits of highly accessible places
In working with transportation agencies across the U.S., our team often faces questions about the role of safety in accessibility analysis. While we know the safety and comfort of streets clearly impacts access for people on foot or bicycle, the effects of accessibility on overall safety haven’t been clear. Fortunately, leading experts in both accessibility and traffic safety recently teamed up to answer this question.
The argument for ending single-family zoning
An article in the latest issue of the JAPA makes a case for getting rid of single-family zoning in U.S. cities. The authors argue that single-family zoning exacerbates inequality and promotes the inefficient use of valuable urban land. By excluding other types of development, R1 zoning produces a housing scarcity in desirable places, which pushes prices up and excludes all but wealthy residents.
Exploring the relationship between transit supply and parking demand
In a recent study, researchers from Australia look closely at the relationship between parking demand and proximity and quality of service supply of public transit. When other socioeconomic factors were considered, the quality of transit service became much more important than proximity alone in determining parking demand. This will be helpful in the ongoing discussion about where and how to reduce or eliminate required parking as part of development.
LOS to play more limited role in California planning, according to survey
A new survey of planning officials in California finds that most are embracing the shift from highway level of service to vehicle miles traveled for evaluating the environmental impacts of new development projects. While some are ditching LOS altogether, however, many still rely on it to measure traffic impacts.
Growth near transit is key to connecting smaller cities, SSTI finds
A new study by SSTI and the Traffic Operations and Safety Lab at UW-Madison provides a partial roadmap to the future for transit in smaller cities. The study gave Eau Claire, Wisconsin—a city nearing 70,000 people—a look into emerging transit technologies and insight on their residents’ perspectives toward transit. SSTI also laid out a dozen future scenarios, evaluating each one using accessibility metrics.
Dense areas are safer but road design is critical
Dense development patterns offer important safety benefits, according to new research from the University of Pennsylvania, but high-speed roads in dense suburban centers are deadly for pedestrians. This new study confirms what others have already shown—that attention to context is critical to safe road design.
Seattle moves to new transportation level of service guidelines
Seattle is the latest city to move away from traditional definitions of motor vehicle LOS and toward a more multimodal approach in assessing the impacts of new development. On January 14, the Seattle Council is set to vote on new regulations for developments to support changes in adopted transportation level of service. The new regulations will change which development projects require transportation mitigation and increase the minimum size of developments that are subject to a transportation impact analysis.