Link layer controllers for the AVHS architecture proposed in PATH are derived using vehicle conservation flow models. Control laws are developed for three highway topologies: a single lane highway, a highway with multiple discrete lanes and a highway with an arbitrary 2 dimensional flow pattern. The control laws obtained for each of the topologies is distributed and is very suited for implement...

Purdue has not only led the way in spreading the gospel of better highway construction methods through its academic program and through regular meetings such as this one, but also set the pattern for service to the state highway department through its Joint Highway Research Project that is now being followed in many other states. And the influence of Purdue is being felt throughout the nation a...

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Introduction The nighttime conspicuity (i.e., detection) of highway signs is highly dependent upon brightness. However, the enhancement in conspicuity due to increasing sign brightness appears to " saturate " at relatively low luminance levels. (1) This suggests that the introduction of ultrabright signing materials will do little to improve the delectability of highway signs. There is some evi...

Transportation networks and governments are both hierarchically organized. In some states state government finances most of the highways, while in other states similar roads are financed locally. Larger governments attain scale economies. However they also tend to be more bureaucratic and have higher operating costs, all else equal, due to problems such as span of control. This study relates hi...

A Ithough the number of traffic accidents each year has been substantially reduced over the past decade, highway crashes continue to be a serious problem in the United States. In 1983 approximately 42,400 persons died in highway crashes, and 2 million suffered nonfatal injuries. The 217. reduction in annual highway fatalities and the 367. reduction in the highway fatality rate (fatalities/lOO m...

based on the molecular modeling studies on two major families of anxiolytics and sedative hypnotics (benzodiazepines and barbiturates) a series of phthalimide derivatives were prepared from corresponding di-methyl phthalate derivatives in two steps, namely trans-amidification and ring closer of di-methyl phthalate with urea and base catalysed condensation of 4-bromobenzyl chloride and benzoyl c...