You are here

News

Safety Article May 01, 2015
When 3M wanted to test a pavement-marking system that could make it easier for drivers to find their way through work zones in dark, rainy weather, the company turned to the Federal Highway Administration’s (FHWA) Highways for LIFE Technology Partnerships Program.   Wet road conditions can make it...
Safety Article May 01, 2015
Priorities for the design of roadways have shifted over the years—from a primary emphasis on increasing capacity to considering the purpose of streets and roads in the context of specific settings (often referred to as context-sensitive design). A technique that has gained popularity in recent...
Safety Article May 01, 2015
Those white and yellow lines on the roadway delineate lanes and orient and guide roadway users, enhancing traffic efficiency, reducing conflict and making navigating easier and more comfortable for travelers.   Most importantly, by helping roadway users navigate properly, those lines help reduce...
Safety Article May 01, 2015
Nontangent roadway sections present a unique challenge for pavements.   The pavement surface must satisfy the necessary friction demand to ensure safety and driver comfort based on the geometry (grade, radius of curvature and superelevation) and anticipated speed of vehicles navigating the curve....
Safety Article May 01, 2015
To help states evaluate their work-zone practices, and to help assess work-zone practices nationally, the Federal Highway Administration (FHWA) developed the Work Zone Mobility and Safety Self Assessment (WZ SA) tool.   The WZ SA tool consists of a set of 46 questions designed to assist those with...
Safety Article May 01, 2015
Who would have imagined five years ago that cell phones and texting would become so deadly?   As an avid motorcyclist, I can attest that literally every “close encounter” I have with a four-wheeler features a distracted driver either talking on a cell phone or texting. As bad as it is on the open...
Winter Maintenance Article May 01, 2015
The Minnesota Pollution Control Agency (MPCA) is charged with protecting the waters of our state.   We have 11,842 lakes and 92,000 miles of river. We not only love our water but we use our water. One out of six of us owns a boat, 900,000 are registered each year and with our 158 species of fish,...
Winter Maintenance Article May 01, 2015
As director of snow and ice operations for the Massachusetts Department of Transportation, Paul Brown often recommended investments and process improvements to upper management.   “Lots of times, they’d come back with, ‘What’s the cost-benefit?’” Brown said. “There was nothing out there to help...
Maintenance Article May 01, 2015
Departments of transportation often provide mixture recommendations for various roadside plantings.   In Minnesota, specifications are given by the Minnesota Department of Transportation (Mn/DOT) for a number of different turf plantings, including salt-tolerant turf for roadsides. Even though these...
Maintenance Article May 01, 2015
$2,696 per lane-mile.   That is how much the Wisconsin Department of Transportation spent on snow removal, deicing and other winter-maintenance activities in the 2010-11 winter season. This cost reflects how formidable a task winter maintenance is in states with snowy climates; in Wisconsin alone...
Maintenance Article May 01, 2015
It has not been raining sideways in Charlotte, N.C., but Ken Hooker knows better than to get slapped in the face with the unexpected.   This is why the deputy streets superintendent for the city of Charlotte is gearing up for a 2013-14 winter season that could drop more precipitation than normal....
Safety Article May 01, 2015
Two-way left-turn lanes (TWLTLs) and raised medians are the two most common types of median treatments.   A TWLTL is a continuous lane between opposing lanes of traffic to allow traffic to make left turns from both directions, and a raised median is a physical barrier that separates opposing lanes...
Safety Article May 01, 2015
At the heart of intelligent transportation systems (ITS) is the notion of getting information about the transportation network to those who need it in a timely, efficient manner.   Better-informed drivers make smarter, safer traveling decisions. Traffic-management personnel—if armed with better...
Safety Article May 01, 2015
When a lane is closed on a two-lane, two-way roadway, flaggers are typically used to control the flow of traffic through the work zone.   While various measures have been implemented in recent years to improve the safety and effectiveness of flaggers, crashes involving flaggers still occur and...
Safety Article May 01, 2015
Intersection crashes continue to represent a significant share of transportation fatalities and serious injuries throughout the country.   There were more than $2.2 million in crashes at or related to intersections in 2009, according to the motor vehicle crash data from FARS and GES. Of those...
Safety Article May 01, 2015
The current federal transportation bill, Moving Ahead for Progress in the 21st Century (MAP-21), was signed into law on July 6, 2012.   MAP-21 legislation demonstrates that Congress recognized the great strides made by the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy...
Safety Article May 01, 2015
A March meeting of transportation officials and transportation-industry members in Crystal City, Va., began to lay the groundwork for a new movement in digital asset data collection.   This effort is designed at systematizing the process of network asset data collection and 3-D virtual design while...
Funding News May 01, 2015
The Texas State House of Representatives on Thursday voted 138-3 in favor of shifting more than $3 billion in existing revenue to non-toll roads. This is multibillion-dollar boost to the cash-strapped Texas Department of Transportation (TxDOT) would potentially arm the agency in its battle with a...
Safety Case Studies May 01, 2015

End-of-Queue Warning System on display at a TxDOT media event in May, 2013. 

In our Roads&Bridges case study from March 2013, we reported that the Texas Department of Transportation (TxDOT) had recently announced the installation of a new traffic safety countermeasure on I-35 work zones.   We then described the new countermeasure, known as the End-of-Queue Warning...
Safety Article May 01, 2015
As Washington, D.C., plunged into summer last year, Congress came together and passed the Moving Ahead for Progress in the 21st Century Act, better known as MAP-21.   It was a bumpy road to get there, but the final vote for passage in both chambers was overwhelmingly bipartisan. Although the law...

Pages

Overlay Init