Commentary

Featured Research Articles

Public sector organizations are increasingly adopting performance measurement systems in response to the need to improve organizational performance, and ultimately produce better results for citizens. Performance measurement frameworks are critical to linking an organization's vision to its daily activities. The balanced scorecard is one such tool that helps organizations make sound decisions, track progress, and execute strategy. Read more...

Accessibility is a very important service offered by transit agencies. We know that because the Washington Metro is accessible. Hundreds of thousands of people with disabilities in our three-state service area can depend on Metro to get where they are going. Our 1200 low-floor 'talking' buses and 91 rail stations with elevators mean that someone who is blind or uses a wheelchair can use bus and rail. Metro can be the family car for someone who cannot drive. And for those who are unable to use bus or rail, there is our paratransit service, MetroAccess. Our 675 lift-equipped paratransit vans deliver over 2 million rides every year to nearly 40,000 customers. Metro really is very important to people with disabilities, and Metro will be even more important to them in the future. But it is not just about Metro. Accessible transit will become more important everywhere. Read more...

The Ontario price index for asphalt binder peaked at $932/ton just before the start of the recession in August 2008 and had climbed there from only $270/ton just three years earlier while today it hovers around $730/ton. This rapid increase has made it highly tempting and profitable to dilute virgin material with cheap waste products such as recycled asphalt mix from old pavement, recycled shingles (tear-off or post-industrial cuttings), waste engine oil residues, waste vegetable oils, and likely a range of other unknowns. Some of what is yet to come sounds rather outlandish-biobinder from pig manure, hydrothermal oil from microalgae, toner waste, and lignin and tall oils from the pulp and paper industry, to name a few, are actively being investigated as substitutes or additives for petroleum derived asphalt binder. Read more...