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.

Roads less traveled: the safety surprises of big cities

The most effective way to stay safe on city streets is remarkably simple: drive less. A new report from StreetLight Data suggests that the vehicle miles traveled (VMT) is the single most important factor in determining how safe a city’s streets are for everyone. Risk is not solely caused by bad drivers; daily driving habits and city layouts play a significant role as well. With U.S. crashes resulting in 2.4 million injuries or deaths in 2023, one of the best safety strategies for planners and engineers is to help people spend less time behind the wheel of a car by making walking, biking, and transit easier to use.

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.

Addressing the rise in drunk driving requires a systemic approach

Human behavior is one of the biggest wildcards in preventing traffic deaths and serious injuries. That is why many transportation professionals now focus on designing systems that stay safe even when people inevitably make mistakes.  Alcohol impaired driving is once again on the rise in the United States, and decades of awareness, education, and enforcement have not solved this problem. New research shows that alcohol is involved in nearly one-third of all traffic deaths, even as public concern about the issue remains very high. In other words, people know drunk driving is dangerous, but some do it anyway. This is not about excusing impaired driving but about acknowledging reality and designing transportation systems that reduce harm when risky behavior persists. 

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.

Caltrans review finds outdated and misunderstood models hinder project analysis

In California, where travel demand models often guide project-level decisions and analysis, a new report finds many are outdated, poorly documented, and ill-suited to the purposes agencies sometimes use them for. Transportation agencies rely on models to forecast traffic and guide billions of dollars in infrastructure investment. Without updates, these tools risk locking in old assumptions about growth and travel behavior rather than helping agencies plan for a more sustainable and efficient future.

Repairing highways is better for the economy than expanding them

The U.S. faces a $1 trillion backlog of roads and bridges needing repair, according to FHWA. Yet we still spend roughly $27 billion per year (25% of the total) expanding and building new highways. Mounting evidence shows that shifting those dollars toward maintenance and rehabilitation could yield greater benefits.