It’s tempting to think of technological advancement in terms of radical new materials or near-magical computer science—for example, the way driverless cars promise to teach artificial intelligence to drive better than humans. But just as often, new technology just makes smarter use of things we already have—for example, the way the novel “diverging diamond” interchange, or DDI, helps keep all-too-human drivers from ramming each other at high speed.

Here’s an overview of the DDI, courtesy of the Florida Department of Transportation.

Pennsylvania Department of Transportation (PennDOT) Secretary Leslie S. Richards joined elected, industry and other transportation officials to mark the state’s continued and progressive steps as a national leader in the safe, innovative development of autonomous and connected vehicle technologies.

Nearly 40 million Americans finished one of busiest travel seasons in history this Memorial Day weekend, jarred by potholes on America's roads, crossing her aging bridges, riding her antiquated railways and taking off from airports that draw international scorn.

Long a source of national pride, America's infrastructure is in critical need of repair, but federal government spending on the issue has gone down 9% in the past decade. As former Secretary of Transportation Ray LaHood says, "We're like a third-world country when it comes to infrastructure."

The House Appropriations Committee advanced a spending bill for the 2017 budget year starting Oct. 1 that funds the U.S. Department of Transportation's (USDOT) highway and transit formula programs at levels consistent with the five-year FAST Act Congress passed in December.

It also includes $19.2 billion in USDOT funding subject to annual appropriations, which the committee said is $540 million above the level enacted for fiscal 2016. In all, the panel said its bill provides $76.9 billion to improve and maintain the nation's transportation infrastructure.



The Allegheny County Department of Public Works wants to thank SAI Consulting Engineers for its efforts on the recently completed Brownsville at Broughton Road Project.  Allegheny County is extremely pleased with the results. The design and construction has alleviated the gridlock at a major intersection, improved storm water drainage, the traffic signal system, and most importantly improved safety for the public.

Stephen G. Shanley, P.E., Allegheny County Department of Public Works
Subscribe to Front page feed