ABD Promos, June 2014, Vol. 14, no.6

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, July 2014, Vol. 14, no.7

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, August 2014, Vol. 14, no.8

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, September-October 2014, Vol. 14, no.9/10

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, November-December 2014, Vol. 14, no.11/12

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, January 2015, Vol. 15, no. 1

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, February 2015, Vol. 15, no. 2

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

A Survey of Traffic Safety Culture Among Iowa Adults, TS-1101, 2012

Iowa’s traffic safety culture is influenced by laws and policies, enforcement methods, driver education, roadway engineering, and drivers’ behaviors. The Center for Social and Behavioral Research at the University of Northern Iowa was contracted by the Iowa Department of Transportation to conduct a general population survey of adult Iowans. Telephone interviews were conducted with 1,088 adult Iowans from October to December 2011. A dual-frame (cell phone and landline) sampling design was used. The interview covered a wide range of traffic safety topics (e.g., traffic safety policies, enforcement techniques, and distracted driving). Most Iowans said driving in Iowa is about as safe now as it was 5 years ago; however, one-fourth said driving in Iowa is less safe now. There are a number of driving-related behaviors many adult Iowans consider serious threats to traffic safety and never acceptable to do while driving. Yet, many Iowans report often seeing other drivers engaging in these behaviors and admit engaging in some themselves. For example, nearly 1 in 5 adult Iowa drivers said they have sent or read a text message or email while driving in the past 30 days despite this being prohibited since July of 2011. A slight majority said they support using cameras on highways, interstates, and city streets to automatically ticket drivers for speeding, with even stronger support for red light cameras. A comprehensive approach to traffic safety in Iowa is required to encourage protective factors that enhance traffic safety and reduce the impact of detrimental factors.

ABD Promos, March 2015, Vol. 15, no. 3

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, April 2015, Vol. 15, no. 4

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

Dynamic Speed Feedback Signs, 2014

Dynamic speed feedback sign (DSFS) systems are traffic control devices that are programmed to provide a message to drivers exceeding a certain speed thresh¬old. A DSFS system typically consists of a speed-measuring device, which may be loop detectors or radar, and a message sign that displays feedback to drivers who exceed a predetermined speed threshold. The feedback may be the driver’s actual speed, a message like “SLOW DOWN,” or activation of a warning device such as beacons or a curve warning sign. For more on this topic by these authors, see also "Evaluation of Dynamic Speed Feedback Signs on Curves: A National Demonstration Project": http://www.trb.org/main/blurbs/172092.aspx

ABD Promos, May 2015, Vol. 15, no.

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, June 2015, Vol. 15, no.6

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

ABD Promos, July 2015, Vol. 15, no.7

The ABD Promos Newsletter is produced monthly and details Division announcements, holiday schedules, broker promotions and a newly listed codes clip out section.

Improved Methods for Determining Wind Loads on Highway Sign and Traffic-Signal Structures, TR-559, 2007

The main objective of the proposed study is to use Computational Fluid Dynamics (CFD) tools to determine the wind loads by accurate numerical simulations of air flow characteristics around large highway sign structures under severe wind speeds conditions. Fully three-dimensional Reynolds- Averaged Navier-Stokes (RANS) simulations are used to estimate the total force on different panels, as well as the actual pressure distribution on the front and back faces of the panels. In particular, the present study investigates the effects of aspect ratio and sign spacing for regular panels, the effect of sign depth for the dynamic message signs that are now being used on Iowa highways, the effect induced by the presence of back-to-back signs, the effect of the presence of add-on exit signs, and the effect of the presence of trucks underneath the signs potentially creating “wind tunnel” effect.