Improving highway traffic through partial velocity synchronization

Abstract The Congress of the United States petitioned the Transportation Research Board of the National Academy of Sciences to study replacement passenger car tire rolling resistance in 2005 with funding from the National Highway Traffic Safety Administration. The study was initiated to assess the potential for reduction in replacement tire rolling resistance to yield fuel savings. The time required to realize these savings is less than the time required for automotive and light truck fleet replacement. Congress recognized that other factors besides fuel savings had to be considered if the committee’s advice was to be a reasonable guide for public policy. Therefore, the study simultaneously considered the effect of potential rolling resistance reductions in replacement tires on fuel consumption, wear life, scrap tire generation, traffic safety, and consumer spending for tires and fuel. This paper summarizes the committee’s report issued in 2006. The authors, who were members of the multidisciplinary committee, also provide comments regarding technical difficulties encountered in the committee’s work and ideas for alleviating these difficulties in further studies of this kind. The authors’ comments are clearly differentiated so that these comments will not be confused with findings, conclusions, and recommendations developed by the committee and contained in its final report.

Download Full-text

Distribution of Speed and Acceleration on a Tread Wear Course

Tire Science and Technology ◽

10.2346/1.2151022 ◽

1981 ◽

Vol 9 (1) ◽

pp. 19-25 ◽

Cited By ~ 1

Author(s):

G. S. Ludwig ◽

F. C. Brenner

Keyword(s):

Traffic Safety ◽

Highway Traffic ◽

National Highway Traffic Safety ◽

Level Crossings ◽

Acceleration Level ◽

Longitudinal Acceleration ◽

Acceleration Data ◽

National Highway

Abstract Belted bias and radial Course Monitoring Tires were run over the National Highway Traffic Safety Administration tread wear course at San Angelo on a vehicle instrumented to measure lateral and longitudinal accelerations, speed, and number of wheel rotations. The data were recorded as histograms. The distribution of speed, the distributions of lateral and longitudinal acceleration, and the number of acceleration level crossings are given. Acceleration data for segments of the course are also given.

Download Full-text

THE EFFECT OF FLARES AND TRIANGULAR DISTRESS SIGNALS ON HIGHWAY TRAFFIC

Optometry and Vision Science ◽

10.1097/00006324-197304000-00005 ◽

1973 ◽

Vol 50 (4) ◽

pp. 305-315

Author(s):

Merrill J. Allen ◽

Stanley D. Miller ◽

James L. Shore

Keyword(s):

Highway Traffic

Download Full-text

Comparative Accuracy Analysis of Truck Weight Measurement Techniques

Applied Sciences ◽

10.3390/app11020745 ◽

2021 ◽

Vol 11 (2) ◽

pp. 745

Author(s):

Sylwia Stawska ◽

Jacek Chmielewski ◽

Magdalena Bacharz ◽

Kamil Bacharz ◽

Andrzej Nowak

Keyword(s):

Measurement Techniques ◽

Highway Traffic ◽

Highway Infrastructure ◽

Measurement Systems ◽

Motion System ◽

Weigh In Motion ◽

Comparative Accuracy ◽

Bridge Weigh In Motion ◽

Rational Management ◽

Truck Weight

Roads and bridges are designed to meet the transportation demands for traffic volume and loading. Knowledge of the actual traffic is needed for a rational management of highway infrastructure. There are various procedures and equipment for measuring truck weight, including static and in weigh-in-motion techniques. This paper aims to compare four systems: portable scale, stationary truck weigh station, pavement weigh-in-motion system (WIM), and bridge weigh-in-motion system (B-WIM). The first two are reliable, but they have limitations as they can measure only a small fraction of the highway traffic. Weigh-in-motion (WIM) measurements allow for a continuous recording of vehicles. The presented study database was obtained at a location that allowed for recording the same traffic using all four measurement systems. For individual vehicles captured on a portable scale, the results were directly compared with the three other systems’ measurements. The conclusion is that all four systems produce the results that are within the required and expected accuracy. The recommendation for an application depends on other constraints such as continuous measurement, installation and operation costs, and traffic obstruction.

Download Full-text