air quality

Washington State bill will require trucks serving ports to be cleaner

By Sam Sklar All drayage trucks serving the ports of Seattle and Tacoma will need to be cleaner under a bill in the state legislature. At that time, trucks moving into and out of these high-volume ports would be required to have engines manufactured in 2007 or later. The state bill extends the

Cleaning up the commercial diesel truck industry

By Logan Dredske In 2011, U.S. EPA and NHTSA established a national program to reduce greenhouse gas emissions and set new fuel efficiency standards for commercial vehicles starting in 2014. The requirements of this program are a driving force that is causing manufacturers to advance diesel

Google’s Street View cars are measuring and mapping air pollution

By Rayla Bellis Last week, Google and the Environmental Defense Fund published the first in a series of maps with data on pollution levels collected using Google Street View vehicles. The initiative, a partnership between EDF, Google Earth Outreach, and San Francisco-based company Aclima, will

Motor vehicle dependence is making us sick: How transportation and urban planners are part of the solution

By Mary Ebeling A recent study published in the medical journal The Lancet focuses on prevention strategies for the global epidemic of non-communicable diseases (NCDs) stemming from an unsustainable reliance on a transportation system reliant on fossil fuels. Such diseases include such as traffic

There’s more to roadway emissions than what comes out of the tailpipe

By Bill Holloway While the push to reduce vehicle emissions has focused on cleaner fuels, more efficient engines, and other technologies that can reduce or eliminate tailpipe emissions, non-tailpipe emissions have remained largely under the radar. Non-tailpipe emissions include dust generated

Freight rail traffic is growing, but urban conflicts hinder infrastructure expansion

By Bill Holloway Much of the news surrounding railroads in recent years has focused on the uncertain future of high-speed passenger rail projects and Amtrak’s financial troubles. However, while passenger rail has been on the front page, freight railroads have been thriving. Revenues of the

Disagreement over the environmental impacts of the Bayonne Bridge project

By Chris Spahr Two federal agencies, the U.S. Coast Guard and the U.S. Environmental Protection Agency, do not agree on the assessment of the environmental impacts of raising the Bayonne Bridge from 150 feet of clearance to 215 feet of clearance over the Kill Van Kull between Bayonne, NJ, and

Silicon Valley shuttles change the face of public transit in San Francisco

By Mary Ebeling The high tech world is fueled by young, well educated, and largely urban workers. Companies hiring these workers – Facebook, Google, and Apple for example – are located in suburban Silicon Valley, about an hour south of San Francisco. To compete for and retain this talent

Methods for Estimating the Environmental Health Impacts of SRTS Programs (National Center for Safe Routes to School, 2012)

This report explores environmental health and Safe Routes to School through a review of the relationship between environmental health and school travel, a discussion on measuring the environmental health impacts of school travel, and five examples of methods used by SRTS programs to estimate the

Carmaggedon leads to significantly better air quality

By Robbie Webber As Los Angeles-area residents were preparing for “Carmageddon II” – the second scheduled closing in two years of 10 miles of Interstate 405, the busiest highway in the country, to complete bridge work – research findings were released showing almost instantaneous