KsDOT Sweet Sixteen Presenter: Rick Kreider, Chief KsDOT, Bureau of Research Researcher: University of Kansas Funding: KTRAN Project.

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Presentation transcript:

KsDOT Sweet Sixteen Presenter: Rick Kreider, Chief KsDOT, Bureau of Research Researcher: University of Kansas Funding: KTRAN Project

Why? …to investigate and evaluate the usage and effectiveness of innovative traffic control devices that can be used in short-term work zones. What was done? …a literature review of previously published research, a nationwide usage survey, and a field test for a selected device - portable plastic rumble strip (PPRS).

What Was Found? Adhesive Rumble Strips -Some of [the strips] were found ineffective, especially for trucks..…36 percent of states commented that these types of rumble strips were ineffective at speed reductions.

What Was Found? Intrusion Alert System- …44 percent of states believe that this type of device was ineffective.

What Was Found? Portable Changeable Message Signs (PCMS) - PCMSs were commonly used in all states and were considered very effective not only in directing drivers’ paths but also in decreasing traveling speeds and the percentage of speeding traffic.

What Was Found? Portable Speed Monitoring Displays (PSMD) - Previous research and this survey found that PSMDs were very effective in both speed reduction and in decreasing the percentage of speeding traffic.

What Was Found? Radar Drones - responses from the various state transportation agencies frequently commented that this device was not actually effective. CB Wizard Alert System - More than 50 percent of responding state transportation agencies considered this device to be effective.

What Was Found? Vehicle-Activated Signs (VAS)- Although not many states have applied this device, it holds a great deal of potential to be used in short- term work zones due to the fact that this device is simple to install and maintain.

What Was Found? Truck Mounted Attenuators (TMA)- TMAs are currently used in short- term work zones by every state… Mobile Barriers - …used in at least four states. Research studies and crash tests have found these devices to be very effective…

Where to now… PCMS, PSMD, TMA– already implemented Mobile Barriers – cost prohibitive PPRS – beginning implementation ITS & QWS – one project in KC area VAS –using KS Highway Patrol Triennial B/C ratio – 1.11, but…