Traffic Control Devices and Measures for Deterring Wrong-Way Movements

Finley, Melisa D; Avelar, Raul; Venglar, Steve P.; Hawkins, H G; Al-Deek, Haitham

doi:10.17226/25231

Cited by 5 publications

(7 citation statements)

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“…Researchers have used the comparison group method to evaluate different safety countermeasures for many years (36,37). This method has also been previously used to conduct before-after analyses on LED and RFB WWD countermeasures (1)(2)(3)(4)(5).…”

Section: Methods 2: Wwcr Reduction Using Reduction In Wwd Eventsmentioning

confidence: 99%

“…Examples of ITS WWD countermeasures include ''Wrong Way'' signs equipped with rectangular flashing beacons (RFBs) or light-emitting diodes (LEDs), detection devices, and cameras. Previous studies have shown that these technologies are effective at preventing wrong-way drivers from entering the mainline (1)(2)(3)(4)(5). However, the lack of WWD crash data makes it difficult to quantify the crash reduction and associated savings provided by these devices.…”

mentioning

confidence: 99%

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Benefit–Cost Analyses of Rectangular Flashing Beacon Wrong-Way Driving Countermeasures on Toll Road Exit Ramps in Florida

Sandt

Al-Deek

Kayes

et al. 2019

Transportation Research Record: Journal of the Transportation R

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In recent years, rectangular flashing beacons (RFBs) and other technologies have been used as wrong-way driving (WWD) countermeasures on limited access facilities. Studies have shown that these devices effectively reduce WWD, but no research has compared the financial benefits and costs of these countermeasures. Three different methodologies were used to conduct benefit–cost analyses for RFB WWD countermeasures installed on Central Florida toll road exit ramps. The studied benefits included savings from reductions in WWD crashes, non-crash events, and injuries, whereas costs included equipment, installation, and maintenance costs. For the first two methodologies, the reduction in WWD crash risk (WWCR) at the RFB-equipped ramps was determined. This WWCR considered non-crash WWD events, interchange design, and traffic volumes. Different measures of effectiveness (turn-around percentage of detected wrong-way vehicles at the RFB ramps and reduction in WWD 911 calls and citations at the RFB interchanges compared with similar comparison interchanges without RFBs) were used in these two methodologies to estimate the WWCR reduction and associated savings. For the third methodology, the relationship between WWD crashes and non-crash events was used to determine the average savings for WWD 911 calls and citations. Before–after analyses were then conducted to determine the individual reductions in WWD 911 calls and citations. Applying these three methods resulted in life-cycle benefit–cost ratios ranging from 2.49 to 4.10 (crash savings) and from 4.77 to 7.20 (injury savings). Other agencies could use these methodologies to determine the benefits of WWD countermeasures or other technologies with limited crash data.

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Section: Methods 2: Wwcr Reduction Using Reduction In Wwd Eventsmentioning

confidence: 99%

mentioning

confidence: 99%

Benefit–Cost Analyses of Rectangular Flashing Beacon Wrong-Way Driving Countermeasures on Toll Road Exit Ramps in Florida

Sandt

Al-Deek

Kayes

et al. 2019

Transportation Research Record: Journal of the Transportation R

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“…The following sections describe the modeling process and statistical analysis results. Additional details can be found in the final report ( 1 ). The median width was defined as the area between the inside edge of the traveled way of the near travel lane or left-turn lane, if present, to the inside edge of the traveled way of the opposing through lane.…”

Section: Statistical Modelingmentioning

confidence: 99%

“…If this new section is added to the MUTCD, duplicated language from the other sections will need to be deleted. Additional details regarding the proposed changes can be found in the final report ( 1 ).…”

Section: Mutcd Implicationsmentioning

confidence: 99%

“…As part of a recent project sponsored by the National Cooperative Highway Research Program (NCHRP), Texas A&M Transportation Institute (TTI) researchers examined the characteristics of wrong-way crashes on divided highways to determine the impact of median width and selected traffic control devices on wrong-way crashes. Details of all components of the project can be found in the final report ( 1 ). The major research efforts included:…”

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confidence: 99%

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Traffic Control Devices for Deterring Wrong-Way Movements at Unsignalized Intersections on Divided Highways

Finley

Avelar

Hawkins

2019

Transportation Research Record: Journal of the Transportation R

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Motorists driving the wrong way on divided roadways has been an area of concern for over 50 years. However, little is known about the nature of wrong-way crashes on divided highways. Thus, the research team conducted exploratory and statistical analyses to assess the effects of median width and select traffic control devices upon wrong-way crashes on high-speed divided highways. The exploratory analysis revealed that most of the wrong-way crashes on high-speed divided highways resulted in serious injury and happened at night. More than two-thirds of the wrong-way crashes resulted from a wrong-way maneuver at an intersecting roadway where a median opening was present. The statistical analysis found numerous sites where the traffic control in the median opening did not fully comply with the Manual on Uniform Traffic Control Devices (MUTCD) with respect to treating the location as one or two intersections. There was also evidence from the statistical analysis that the 30-ft median width threshold may not be appropriate for distinguishing between one or two intersections. In addition, researchers were able to identify several traffic control devices that may be effective in reducing wrong-way movements on high-speed divided highways. The final effort of the project was to develop recommended MUTCD language for implementing the research findings. The recommended language includes a new method for distinguishing between divided highway crossings that function as a single intersection or two separate intersections, thereby eliminating the 30-ft median width threshold used in the current MUTCD.

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Examining strategies, policies, and guidance for addressing wrong-way driving in the United States: A comprehensive national survey

Song,

Zhou,

Tobias

et al. 2024

Journal of Safety Research

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Traffic Control Devices and Measures for Deterring Wrong-Way Movements

Cited by 5 publications

References 0 publications

Benefit–Cost Analyses of Rectangular Flashing Beacon Wrong-Way Driving Countermeasures on Toll Road Exit Ramps in Florida

Benefit–Cost Analyses of Rectangular Flashing Beacon Wrong-Way Driving Countermeasures on Toll Road Exit Ramps in Florida

Traffic Control Devices for Deterring Wrong-Way Movements at Unsignalized Intersections on Divided Highways

Examining strategies, policies, and guidance for addressing wrong-way driving in the United States: A comprehensive national survey

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