U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Highway engineering organizations and the motoring public are requiring timely, accurate, and readily accessible information on the extent of congestion in the vicinity of construction work zones. To that extent, Caltrans and FHWA are partnering on a new initiative that incorporates the latest ITS technology in work zones called Automated Work Zone Information System (AWIS).
The general premise of the system is: (1) gathering traffic data from multiple locations on all approaches; (2) analyzing the data in real-time to determine current traffic conditions, compute speed differentials, and predict delay; and (3) providing motorists with accurate, time-stamped, information which include speed differentials, delay, and alternate route advisories.
By reducing speed differentials, construction worker and motorist safety will be improved. Smoothing and controlling traffic on the primary and alternate routes will also reduce congestion. Rear-end crashes are expected to be reduced as well as road rage from drivers who don't know what to expect.
Variations of AWIS have been deployed around the county and have shown promising results. Caltrans and FHWA hope the same can be incorporated as part of work zones in California to help improved mobility and safety.
The FHWA, California Divsion is currently working with Caltrans and DOT's across the country to develop a bridge rail guide. The document will include a comprehensive list of crash tested, accepted bridge rails from across the country. The publication should be completed this spring. it will be available for download from the FHWA Bridge Technology website. More information.
Use of both of these technologies by State DOTs across the country has been on the rise for the past few years. In an effort to provide assistance to States and other Transportation Partners, FHWA has completed a number of efforts in this area. These efforts include the following:
FHWA has sponsored several conferences, Geophysics 2000, 2002, 2003, on this subject. More information about these conferences.
A report, "Nondestructive Testing for Quality Assurance and Quality Control of Drilled Shafts at State Departments of Transportation", was completed by FHWA-CA Division office in conjunction with California State University – LA (Report No. FHWA-CA-03-001). Document is posted in the DOT Online Publications website. More information.
The Central Federal Lands Highway Division Office of FHWA has developed an online interactive manual entitled "Applications of Geophysical Methods to Highway Related Problems..." Access the document.
FHWA's Geotechnical Engineering website has a wealth of additional information. This includes publications, working groups, and information about conferences and other national activities. More information.
Other Transportation Entities are involved in this effort. Click the links below for more information on their websites: