Accidents on Suburban Highways—Tennessee's Experience

Margiotta, Richard; Chatterjee, Arun

doi:10.1061/(asce)0733-947x(1995)121:3(255)

Cited by 8 publications

(4 citation statements)

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“…It is well documented that the existence of a median, regardless of type, improves safety when contrasted with undivided roadways with similar volumes and driveway density. Some previous research efforts have indicated that raised medians are typically safer than continuous TWLTLs, though TWLTLs may be suitable for roadways with low volumes and high driveway density (18,19). Gattis et al found a decrease in crash rates associated with increased median width and increased access spacing at high-speed (greater than 40 mph) rural and urban fringe highways in Arkansas (15).…”

Section: Median Configurationmentioning

confidence: 99%

Influence of Land Use and Driveway Placement on Safety Performance of Arterial Highways

Avelar

Dixon

Brown

et al. 2013

Transportation Research Record: Journal of the Transportation R

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Characterizing driveway safety is a relevant and relatively complex topic in transportation safety research. This research studied the safety link of driveways abutting Oregon highways and considered various factors proposed in the current literature for design and evaluation of the safety performance of roadside elements. On the basis of two probability samples from rural and urban arterial state highways, this research developed alternative safety performance functions to evaluate the safety impacts of various driveway configurations. These safety performance functions were intended to explore driveway safety beyond the average driveway density treatment commonly encountered in the literature. The statistical models and methodologies in this research are comparable with those in the Highway Safety Manual. The proposed models exhibited different ranges of effects for urban and rural conditions, but type of land use proved a prominent factor for both the urban and the rural models. The analysis showed that roadside safety is influenced mainly by driveways associated with commercial and industrial land uses in the urban environment. Similarly, industrial driveways are more influential for safety than other types in rural environments. In addition, the rural model uncovered a safety connection to clusters of driveways rather than to driveways alone. This research indicated that after driveway land use in rural environments was accounted for, clustered driveways tended to have fewer crashes compared with isolated driveways.

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Section: Median Configurationmentioning

confidence: 99%

Influence of Land Use and Driveway Placement on Safety Performance of Arterial Highways

Avelar

Dixon

Brown

et al. 2013

Transportation Research Record: Journal of the Transportation R

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“…In recent years, access management along arterial streets has started to gain attention from researchers (8)(9)(10)(11)(12). Using microscopic traffic simulation models for 11 arterial corridors, Eisele and Frawley estimated the relationship between crash rates and density of access points (driveways and public street intersections), with or without the presence of raised medians or two-way left-turn lanes (8).…”

Section: Literature Reviewmentioning

confidence: 99%

Analysis of Safety Effects of Traffic, Geometric, and Access Parameters on Truck Arterial Corridors

Sultana

Qin

Chitturi

et al. 2014

Transportation Research Record: Journal of the Transportation R

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According to NHTSA, more than 400,000 truck-related crashes occurred in 2009; approximately 7,800 of those were fatal. Truck-related crashes undermine the truck's remarkable contribution to the U.S. economy. Truck safety research on arterial streets is considerably disproportionate when compared with the extensive studies of truck safety on freeways. Identifying critical factors that contribute to truck-related crashes and developing remedial and preventive strategies to reduce truck-related crashes and their consequences on arterials are imperative. Truck-related crashes can be mitigated through careful planning of the location, design, and operation of driveways, median openings, and street connections. In this study, access-related data were collected manually in addition to roadway geometric characteristics. The augmented data offered more explanation and prediction power for truck crashes. The standard deviation of commercial driveway throat width, commercial driveway throat width with flare and its standard deviation, and the proportion of divided commercial driveway, signal density, and shoulder width were significant factors for crash frequency prediction. A generalized negative binomial model was used to identify sources of data overdispersion. This study found that some previously significant variables were no longer significant after access parameters were added; this finding demonstrated the impact of access parameters on truck-related crashes on arterials. This noticeable change in the statistical models composed of different variables is a reminder that a spurious relationship can form if a causal relationship is nonexistent.

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“…For example, Margiotta and Chatterjee (1995) found that although raised medians were generally safer than TWLTLs, the TWLTLs performed better in segments with high driveway densities and low-to-medium traffic volumes. They concluded that driveway densities were an important contributor to crashes in raised median sections, but not in lower volume TWLTL sections.…”

Section: Combined Effects Of Medians and Other Factorsmentioning

confidence: 99%

Developing an Oregon Access Management Best Practices Manual

Dixon

Yi²,

Brown³

et al. 2013

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Sponsoring Agency Code Supplementary Notes AbstractThis Report reviews an Oregon research effort to develop an Oregon Access Management Best Practices Manual. In particular, this research effort develops a resource to help transportation professionals quantify safety and operational effects of various access management strategies, provide measurable criteria to evaluate these access management techniques, and identify data collection practices necessary to successfully perform these assessments. It is the expectation that this manual can be used by engineers, decision makers, and educators to help the transportation community better understand the appropriate application of access management strategies and how to quantify benefits of the various access management options.This report includes a literature review of safety and operational benefits for a variety of access management configurations. Included in this benefits summary is information about perceived and measured economic impacts of access management even though they are not explicitly included in the companion manual. In addition, this report summarizes example data for access management through the use of case studies, and includes (in the appendix) a standalone proposed access management best practices manual. The case studies were used to test practicality of acquiring various data elements and are not directly reflected in the manual.17.

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Accidents on Suburban Highways—Tennessee's Experience

Cited by 8 publications

References 0 publications

Influence of Land Use and Driveway Placement on Safety Performance of Arterial Highways

Influence of Land Use and Driveway Placement on Safety Performance of Arterial Highways

Analysis of Safety Effects of Traffic, Geometric, and Access Parameters on Truck Arterial Corridors

Developing an Oregon Access Management Best Practices Manual

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