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Title: Vehicle design and the physics of traffic safety


No abstract prepared.

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Publication Date:
Research Org.:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0031-9228; PHTOAD; TRN: US200811%%129
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics Today; Journal Volume: 59; Journal Issue: 1; Related Information: Journal Publication Date: January 2006
Country of Publication:
United States
29; DESIGN; PHYSICS; SAFETY; vehicle safety

Citation Formats

Ross, Marc, Patel, Deena, and Wenzel, Tom. Vehicle design and the physics of traffic safety. United States: N. p., 2005. Web.
Ross, Marc, Patel, Deena, & Wenzel, Tom. Vehicle design and the physics of traffic safety. United States.
Ross, Marc, Patel, Deena, and Wenzel, Tom. Thu . "Vehicle design and the physics of traffic safety". United States. doi:.
title = {Vehicle design and the physics of traffic safety},
author = {Ross, Marc and Patel, Deena and Wenzel, Tom},
abstractNote = {No abstract prepared.},
doi = {},
journal = {Physics Today},
number = 1,
volume = 59,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2005},
month = {Thu Dec 01 00:00:00 EST 2005}
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  • There are four major types of road sensors currently being employed to monitor the speed, volume, weight, and classification of vehicle traffic. The most common, the road tube axle sensor, is used for volume, speed, and classification studies. The vehicle inductive loop sensor is used for volume, speed, and length classification studies. The capacitance axle weight sensor is used for volume and weigh-in-motion studies. The piezoelectric axle sensor is used for volume, speed, classification and weigh-in-motion studies. These sensors are used in conjunction with electronic traffic counters, which establish the monitoring parameters and store the results for generating traffic engineeringmore » reports.« less
  • Workers requiring off-the-road passage to pipeline-construction or maintenance sites would best protect the environment by traveling along ridgetops when possible and avoiding boggy areas and side slopes with highly erodible soils, concludes a land-disturbance study conducted by the University of Alaska. The effects of off-road vehicle traffic on Alaskan soil morphology, soil bulk, density, plant species composition, and plant growth are greatest in poorly drained areas or on slopes with loose, gravel-free soils that are highly susceptible to erosion. The least damage occurrs on soils containing high amounts of gravel or cobbles.
  • The emission rates for 221 vapor-phase, semivolatile, and particle-phase organic compounds from motor vehicles plus fine particulate matter mass and some inorganic particle-phase species are calculated based on measurements made inside and outside a Los Angeles roadway tunnel in 1993. These emission rates are calculated based on tunnel dilution rates or air circulation. The results show carbon monoxide emissions rates of 130 g L{sup {minus}1} of gasoline-equivalent fuel burned and volatile organic compound (VOC) emissions of 9.1 g L{sup {minus}1}. These values are higher than predicted by the baseline version of California`s EMFAC 7G emissions inventory program but are withinmore » the coemission rate range of 108 {+-} 25 g L{sup {minus}1} reported by roadside remote sensing studies in Los angeles. When the VOC emissions composition in the tunnel is compared to that of tailpipe emissions source test data and to the composition of additional unburned whole gasoline, the tunnel atmosphere is found to be consistent with a linear combination of these major contributors over a fairly broad range of about 74--97% vehicle exhaust depending on the tailpipe profiles used.« less
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