Arizona, United States
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Arizona's Dust Detection System Reduced Average Vehicle Speed to 45 mi/h by Automatically Changing Speed Limit From 75 mi/h to 35 mi/h during Dust Storms.
METHODOLOGY
The dust-detection technology employed in this study included overhead message boards, variable speed limit signs, closed-circuit cameras and short-range detectors for blowing dust. In…
Content type
Date Posted
12/27/2024
Taxonomy (ARC-IT)
Spot Weather Impact Warning (WX03)
Geolocation links
Pedestrian Hybrid Beacons Installed in Arizona Reduced Pedestrian-Related Crashes by 46 Percent.
METHODOLOGY
Researchers conducted a statistical before-after study based on Empirical Bayes (EB) and Safety Performance Functions (SPFs) to analyze safety effectiveness. The observed crash…
Content type
Date Posted
09/28/2021
Taxonomy (ARC-IT)
Transit Pedestrian Indication (PT11),
Dynamic Roadway Warning (TM12),
Vulnerable Road User Safety (VS12)
Geolocation links
Arizona Study Suggests Revising Pedestrian Hybrid Beacon Location Criteria to Include Roadways with Speed Limits of Up To 50 MPH and Latent Crossing Demand.
Below are recommendations for PHB design and application:
Increase the upper speed limit of roadways where PHBs can be installed to 50 MPH. Current guidance states that states that PHBs should…
Content type
Date Posted
09/28/2021
Taxonomy (ARC-IT)
Transit Pedestrian Indication (PT11),
Dynamic Roadway Warning (TM12),
Vulnerable Road User Safety (VS12)
Geolocation links
