Nearly all trips taken in some cities by ridehail services, such as Uber or Lyft, could be taken by transit, according to new research. That means the excess traffic those trips create could be prevented, with the right incentives. To encourage people to opt for transit instead of ridehail, transit agencies can pursue strategies to shorten walk and wait times associated with transit.
Research
Too much driving is bad for society, new studies show
It turns out trying to expand the freedom of the open road has its limits—when taken too far, it can end up driving people apart.
New transit stations don’t have to mean gentrification or displacement
Major transit investments like new light rail lines or stations can transform neighborhoods and cities — in certain respects, that’s the point. The new infrastructure can make a city more vibrant and accessible to all, while encouraging the development of more walkable neighborhoods that make it easier to get around without a car, reduce emissions, and improve safety. But planners can take steps to ensure those benefits are shared among everyone, not just younger professionals or affluent newcomers.
The benefits of transit extend well beyond transit riders
Public transit is often viewed by planners and transportation officials as a key strategy for reducing car dependency, easing traffic congestion, and lowering emissions. Every person who opts for transit over driving helps reduce the total miles driven in private vehicles. According to a large national study, however, good transit has a ripple effect on land use and travel behavior. For every mile not driven by transit riders, transit accounts for another six to nine miles not driven among the larger population.
Rural town centers can provide transportation benefits similar to those of urban areas
People living in dispersed rural areas face some of the greatest transportation challenges, according to a new study. However, living in more concentrated rural villages helps alleviate those challenges. Ensuring people can get around without relying on a car—even in rural pockets—is key to meeting their needs more affordably.
Mobility hubs can increase access for disadvantaged groups
For DOTs looking to create a more connected and multimodal transportation network, mobility hubs are an emerging piece of infrastructure that can make changing modes and traveling across a region more convenient and environmentally friendly. But not everyone has the same ability to access and use these hubs. State DOTs looking to build mobility hubs can incorporate the needs, ideas, and feedback of disadvantaged groups to better plan, design, and build these spaces for everyone who might use them.
Want to respond to crashes quicker? AI could help
State transportation agencies are cautiously dipping their toes into the waters of “artificial intelligence” and “machine learning” to find applications in the transportation field. There are many potential uses, according to a new report, including opportunities to track assets like crosswalks, and to clear traffic incidents faster, which could lessen the need for major capacity investments. Agencies have also identified some lessons and pitfalls of the technology as they pilot new tools.
Highway costs outweigh benefits, especially when land value is considered
Highway expansion projects rarely deliver the time-saving benefits that policymakers promise. Adding more lanes generally leads to increased demand, more congestion, and higher emissions. A new study finds that economically, these projects usually fall short by about 17% of their projected benefits, and costs are significantly higher when land use is factored into the equation. Due to the historical inefficiencies and limited effectiveness of highway projects in achieving their economic goals, prioritizing transit could lead to greater sustainability and efficiency. While transit projects also can be costly, they often provide more sustainable and long-term travel solutions when compared to highways.
Dedicated bus lanes improve safety
The U.S. DOT is funding bus projects across the country that promise many of the same benefits as rail, but at lower cost. With dedicated lanes and stations that are more like train stops than a typical American bus stop, bus rapid transit (BRT) aims to move large numbers of people through congested areas faster than rush hour traffic. This sometimes comes with tradeoffs, like the loss of regular traffic lanes, but it can also offer unanticipated safety benefits, like curbing excessive traffic speeds, according to new research.
Reducing lanes for cars doesn’t slow 911 response
Road diets, for example, converting 4 lanes into 3, provide many benefits including traffic calming and improved safety for drivers, bicyclists, and pedestrians. Agencies implementing road diets have seen a 29% average reduction in crashes. However, they often face pushback when planning these conversions, especially from those concerned about potential delays for emergency response. New research suggests these conversions don’t delay emergency response vehicles, meaning they could offer a more balanced approach to safety.