Evaluation of Speed Displays and Rumble Strips at Rural-Maintenance Work Zones

Fontaine, Michael D.; Carlson, Paul J

doi:10.3141/1745-04

Cited by 38 publications

(23 citation statements)

References 1 publication

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“…The observed increase in speed compliance of 2.9% was within the range of 1% to 7% reported by Fontaine and Carlson (2001) in their Texas study. A slight decrease in the mean speed and a shift in the speed distribution toward lower speeds were observed but were not statistically significant.…”

Section: Discussionsupporting

confidence: 78%

“…KDOT found ATM to significantly reduce the mean and 85% speed for passenger cars and trucks (Meyer, 2000). Fontaine and Carlson (2001) evaluated the effectiveness of portable rumble strips at rural maintenance work zones in Texas. The dimensions of the rumble strips evaluated were different from the ones used in Kansas (Meyer, 2000).…”

Section: Review Of Temporary Rumble Stripsmentioning

confidence: 99%

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Elevated-Risk Work Zone Evaluation of Temporary Rumble Strips

Sun

Edaram

Ervin

2011

Journal of Transportation Safety & Security

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A field study was conducted on a Missouri low-volume road to examine if temporary rumble strips could improve safety in elevated-risk work zones. This study complements previous studies by addressing several new issues: vehicles that cross over a lane to bypass strips, physical displacement of strips, and deployment of strips at an angle. An objective was to measure performance in a challenging and nonidealized site, thus the site contained geometric challenges such as curves, a bridge approach, and a pavement transition. The study found an increase of more than 10% in the number of vehicles that braked due to rumble strips, an average speed decrease of up to 6 kilometers per hour (3.7 miles per hour), and an increase in speed compliance of 2.9% for the braking vehicles. But the number of lane crossovers increased by 8.79%. The study also compared rumble strips deployed perpendicularly and at an angle and found no significant differences in braking and speed reductions but found an increase in lane crossovers. In terms of vertical movement, perpendicular strips did not move whereas angled strips moved up to 3.73 cm per 100 wheel impacts. Taking into account all study measures, the rumble strips provided a net improvement in safety.

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Section: Discussionsupporting

confidence: 78%

Section: Review Of Temporary Rumble Stripsmentioning

confidence: 99%

Elevated-Risk Work Zone Evaluation of Temporary Rumble Strips

Sun

Edaram

Ervin

2011

Journal of Transportation Safety & Security

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“…The hypothesis of using the speed display is that drivers will actively slow down if they see their speeds above the posted limit. Fontaine and Carlson (2001) investigated the effectiveness of the portable speed displays at a rural-maintenance work zone on US 62 eastbound in Texas. The speed limit of the road segment was 70 mph and the traffic volume was approximately 1,000 vehicles per day.…”

Section: Speed Displaymentioning

confidence: 99%

“…vehicles travel 10 mph over posted speed limit) was up to 80%. One week after the speed displays were put into place, the percentage dropped from 80% to 44% at Figure 3.5 Work zone configuration with two speed displays (Fontaine & Carlson, 2001). the first speed display, and the percentage dropped 80% to 33% at the second speed display.…”

Section: Speed Displaymentioning

confidence: 99%

Best Practices for Maximizing Driver Attention to Work Zone Warning Signs

Ukkusuri¹,

Gkritza²,

Qian³

et al. 2017

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the studies found reductions in vehicle speeds up to 10 mph.• Changeable message signs (CMS) are ideal for short-term and mobile work zones due to their portability. For CMS displaying text messages, innovative use of fonts and content may achieve greater speed reduction. Graphic-aided CMS are found to be more legible and recognizable compared with text-message CMS. The location of CMS has significant impact on the effectiveness of this technology; placing in advance of a work zone is recommended.• The presence of police cars may reduce car speeds by 4.4 mph and truck speeds by 5 mph (in a 45 mph speed zone). High-speed drivers are found to be more affected by police enforcement. Despite the effectiveness of CMS, "halo" effects and high costs are known to be the two main drawbacks of the technology. • Implementations of variable speed limit (VSL) resulted in reduced speed variance, increased speed compliance, and improved traffic throughput and Joint transportation research program

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“…Between 2005 and2008, an average of 49% of road construction site worker fatalities were the result of being struck by a moving vehicle (U.S. Department of Labor, 2009). Three major factors have been identified as the cause for highway work-zone crashes: excessive vehicle speeds, driver speed variation, and driver inattention and erratic maneuvers (Fontaine & Carlson, 2001;Sarasua et al, 2007). Garber and Zhao (2001) studied the work-zone crash data in Virginia and found that most of the crashes are rear-end crashes and speed related.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Design and Placement of Work-Zone Warning Signs on Driver Speed Compliance: A Simulator-Based Study

Strawderman

Huang

Garrison

2013

IIE Transactions on Occupational Ergonomics and Human Factors

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OCCUPATIONAL APPLICATIONS In this work, simulated driving was used to test how characteristics of dynamic message signs impact driver behavior when entering designated work zones. Driver compliance with posted speed limits was measured in response to signs that differed in terms of placement distance and type of sign design. Signs should be placed farther ahead of the work zone to enhance speed compliance. Such compliance can also be enhanced by using concise sign content. TECHNICAL ABSTRACT Background and Rationale:In recent years, the number of occupational fatalities occurring as a result of workers being struck by vehicles while on the job has remained high. Fatalities are especially apparent at road construction sites, where nearly half of the fatal occupational injuries were classified as a worker being struck by a moving vehicle, highlighting the need for research to identify techniques to reduce the incidence of injury in future years. Purpose: This project investigated how the characteristics of a dynamic message sign can impact driver compliance with posted information in work-zone settings, specifically signs indicating speed reduction. Methods: Driving simulation was used to assess the effects of three placement distances (305, 457, and 610 m before the work zone) and four sign designs (differing in whether the sign was static versus dynamic and the amount of information presented). The study was completed by 39 participants, during which driving speed and compliance with speed change were recorded. Results: Placement of the speed-reduction signs impacted driver behavior, with greater placement distances being associated with higher speed reduction and compliance rates. Speed reduction was also significantly impacted by sign design, with the largest speed reduction apparent with signs that are static or with dynamic signs that presented one complete statement per display frame. Conclusions: To achieve greater driver compliance with speed limits within work zones, greater sign placement distance is preferred. The content of dynamic

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Evaluation of Speed Displays and Rumble Strips at Rural-Maintenance Work Zones

Cited by 38 publications

References 1 publication

Elevated-Risk Work Zone Evaluation of Temporary Rumble Strips

Elevated-Risk Work Zone Evaluation of Temporary Rumble Strips

Best Practices for Maximizing Driver Attention to Work Zone Warning Signs

The Effect of Design and Placement of Work-Zone Warning Signs on Driver Speed Compliance: A Simulator-Based Study

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