School bus acceleration characteristics.

Arkansas State Highway and Transportation Department, Little Rock

No-passing zone treatments for special geometric and traffic operational situations. Final report.

Federal Highway Administration, Traffic Systems Division, Washington, D.C.

Railroad safety: status of efforts to improve railroad crossing safety.

Mode of access: Internet.

Multidisciplinary accident investigation - school bus locomotive-caboose collision, Lafayette, Oregon, September 8, 1976. MDAI team report.

National Highway Traffic Safety Administration, Washington, D.C.

Railroad grade crossing/school bus safety : report to the Illinois House of Representatives, Counties and Township Committee /

"January 15, 1996."

The effectiveness of strobe lights as supplemental warning devices at protected railroad grade crossing : (final report) /

Bibliography: p. [20]

Freight car reflectorization.

Federal Railroad Administration, Office of Research and Development, Washington, D.C.

Intelligent transportation systems benefits: 2001 update.

Transportation Department, Joint Program Office for Intelligent Transportation Systems, Washington, D.C.

Aerial -- Lodge Expressway

On verso: Michigan Central Railroad grade separation in foreground looking northwest beyond end of expressway. Altitude - 2500 ft.

Road Ecology: A Practitioner's Tale

Road Ecology is a relatively new sub-discipline of ecology that focuses on understanding the interactions between road systems and the natural environment. Wildlife crossings that allow animals to safely cross human-made barri-ers such as roads, are intended not only to reduce animal-vehicle collisions, but ideally to provide connectivity of habitat areas, combating habitat fragmentation. Wildlife mitigation strategies to improve the permeability of our infrastructure can include a combination of structures (overpasses/underpasses), at-grade crossings, fencing, animal-detection systems, and signage. One size does not fit all and solutions must be considered on a case-by-case ba-sis. Often, the feasibility of the preferred mitigation solution depends on a combination of variables including road geometrics, topography, traffic patterns, funding allocations, adjacent land use and landowner cooperation, the target wildlife species, their movement patterns, and habitat distribution. Joe and Deb will speak to the current road ecolo-gy practices in Montana and some real-world applications from the Department of Transportation.

Bayesian methodology incorporating expert judgment for ranking countermeasure effectiveness under uncertainty: Example applied to at grade railroad crossings in Korea

This paper describes the formalization and application of a methodology to evaluate the safety benefit of countermeasures in the face of uncertainty. To illustrate the methodology, 18 countermeasures for improving safety of at grade railroad crossings (AGRXs) in the Republic of Korea are considered. Akin to “stated preference” methods in travel survey research, the methodology applies random selection and laws of large numbers to derive accident modification factor (AMF) densities from expert opinions. In a full Bayesian analysis framework, the collective opinions in the form of AMF densities (data likelihood) are combined with prior knowledge (AMF density priors) for the 18 countermeasures to obtain ‘best’ estimates of AMFs (AMF posterior credible intervals). The countermeasures are then compared and recommended based on the largest safety returns with minimum risk (uncertainty). To the author's knowledge the complete methodology is new and has not previously been applied or reported in the literature. The results demonstrate that the methodology is able to discern anticipated safety benefit differences across candidate countermeasures. For the 18 at grade railroad crossings considered in this analysis, it was found that the top three performing countermeasures for reducing crashes are in-vehicle warning systems, obstacle detection systems, and constant warning time systems.

Motorists' requirements for active grade crossing warning devices /

Mode of access: Internet.

Experimental design for evaluating the safety benefits of railroad advance warning signs /

Mode of access: Internet.

Navigational clearance requirements for highway and railroad bridges.

Cover title.

Transporting spent fuel : protection provided against severe highway and railroad accidents.

"March 1987"--P. i.