Modern state DOTs and their engineers are grappling with a different set of challenges than they did in the 20th century. Some are shifting to managing travel demand and limiting vehicle-miles traveled (VMT) to make their systems operate more efficiently. But engineering education programs may not be properly preparing engineers for these new challenges, sometimes leaving them to learn on the job in environments that can be mired in old ways of thinking.
Best Practices
Transportation disrupted: Building a more resilient system
Recent spikes in gas prices expose a fragile system that financially strains car-dependent households. When prices rise, however, people adapt in surprising ways, especially when they have reliable options. Transportation leaders can seize this moment to take steps toward reducing car dependency and building systems that are resilient by providing more affordable travel choices before the next disruption occurs or if the current trends continue.
Transportation disrupted: Rising prices expose a vulnerable system
When gas prices spike, millions of Americans have little choice but to pay the bill. That is not just a cost problem. It is a sign that the U.S. transportation system rests on a fragile foundation shaped by land use and infrastructure that require a car for most everyday trips. At the same time, the transition to electric vehicles remains slow and uneven.
A transportation system that works for grandma benefits everyone
Designing for “all ages and abilities,” – meaning accessible curb ramps, bus stops, and safe bike paths – is not new to most transportation professionals. But meeting the needs of aging Baby Boomers will take a more systemic approach to building for all ages and abilities. Living in places with more developed and reliable transit and sidewalk networks where goods and services are close by is good for seniors, and for everyone else.
States DOTs can lead in cutting emissions. Our latest report explains how.
More states are now tracking harmful carbon emissions, setting ambitious goals to reduce those emissions, and exploring opportunities to meet those goals, even as the federal government walks back its commitment to public health and well-being. With transportation accounting for around 30% of emissions, more than any other sector, state DOTs play a key role. Several states—California, Colorado, Minnesota, Oregon, and Washington—have set an early example of what’s possible.
Bus lanes make busy roads work better
In almost every urban area, congestion has been rising for years despite expensive efforts to widen roads and add lanes for private vehicles. But a new study shows that when demand is high, repurposing the road space already available can boost system performance without any expansion. Creating dedicated lanes for buses and bikes can optimize space – and failing to do so can start a vicious cycle of congestion.
One year into congestion pricing, every DOT can learn from New York City
New York City shares many of the same goals as state and local transportation agencies: cutting traffic, improving travel times, making roads safer, and improving quality of life. Yet decades of investment in highway capacity have failed to deliver on those goals. Commute times have increased 7.5% since 2010, congestion has reached an all-time high, and U.S. roadways have become more dangerous than those of any other wealthy nation.
New research shows where low stress streets make the biggest difference
Making streets less stressful for walkers and bikers is strongly associated with more walking and biking, and new research from Maryland helps clarify where those effects are most pronounced. Building on prior research showing that lower-stress street environments are linked to more walking and biking, this study found that reducing traffic stress has the biggest impact for shorter trips and in places where alternatives to driving already exist. for shorter trips and in places where alternatives to driving already exist.
We don’t need to overthink induced demand to act on it
The concept of induced demand is now widely recognized in transportation. But we often treat it as a technical modeling issue rather than a basic principle of how people respond to the world around them. Build for cars, and you’ll get more driving; build for transit or biking, and you’ll get more of those too. Shifting the conversation in that direction can improve near-term decisions and strengthen communication between transportation professionals and the public.
To reduce traffic, DOTs need both “carrots” and “sticks”
Nearly every state DOT is grappling with how to reduce traffic and carbon emissions—many states developed official , and congestion relief is often at the top of a DOT’s priority list. But a new study from Swedish researchers says that some of the most common ways to address these challenges—using only “carrots” rather than “sticks,” in the researchers’ words—may leave states struggling to achieve their goals.