The rural deployment of dynamic message signs (DMSs) has been more limited than its deployment in urban areas because of the more dynamic nature of traffic conditions and heavier traffic volumes. However, Missouri Department of Transportation (MoDOT) was awarded a rural safety improvement program (RSIP) grant in 2008 to deploy DMSs and closed-circuit television (CCTV) cameras on some rural segments of highway in the southeast region of Missouri. The University of Missouri performed an evaluation of the deployments with a focus on obtaining the perception of motorists toward DMSs in rural areas, evaluating the impact of DMSs in alerting drivers of an upcoming work zone, and evaluating the impact of DMSs in diverting traffic to a detour route during full freeway closure.
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