AI transit systems are moving from limited demonstrations into operational decision support, but the strongest lessons from recent studies are less about algorithms than about implementation discipline. Transit agencies need accurate data, well-defined use cases, staff capacity, privacy controls, and evidence that a tool improves service without shifting risk onto riders or operators.

The recent evidence base is mixed but useful. Some deployments have reported measurable gains in dispatching, travel time, operating cost, or staff workflow.… Read the rest

Federal transit funding helped U.S. public transportation agencies absorb a severe ridership shock after 2020, but recent evidence does not show a simple dollar-to-rider relationship. The strongest finding from the research base is more conditional: federal support appears most effective where it expands useful service, modernizes fleets, stabilizes operations during revenue losses, or supports fare policies that lower barriers to riding.

The evidence also shows why caution is needed. Transit ridership is shaped by land use, work patterns, service frequency, fare policy, safety perception, network design, household vehicle access, and the age of the existing system.… Read the rest

Renewable Natural Gas has moved from a niche waste-to-fuel pathway into a more defined part of U.S. transportation policy. The shift is not mainly a technology breakthrough. It is a policy and accounting change: federal tax credits, emissions-rate tables, and state fuel incentives are giving producers and fleet operators clearer signals about how RNG may be valued when it is used as transportation fuel.

The case for RNG in transportation is tied to two systems that cities and rural regions already manage: organic waste and heavy-duty fuel demand.… Read the rest

Transit funding benefits are not evenly distributed across every urban area. Recent research cited in the available evidence suggests that small and midsize cities may gain more new riders from each added federal transit dollar than the largest metropolitan systems, especially where funding is paired with service design that fits local travel patterns.

That finding matters for green transportation policy because many climate and mobility discussions concentrate on major rail and bus systems in large cities.… Read the rest

The term “green transportation” often brings up images of eco-friendly cars and good deeds. But the truth is, it’s a tough challenge in engineering.

Imagine making our whole transportation system use less carbon. It’s like a big change in how we use energy. We need everything to work together smoothly.

The sun shines only during the day, and the wind blows when it wants. This is the problem Khalifa University’s Advanced Power and Energy Center (APEC) is trying to solve.… Read the rest