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Technical Paper

A Concept of IVHS in Commercial Vehicle Operation: The HELP/Crescent Program

1991-10-01
912776
The HELP Program and Crescent Demonstration Project is a bi-national multi-jurisdictional cooperative research and demonstration project involving the public and private sectors in an application of advancing technologies in the creation of an integrated heavy vehicle management system with applications to both highway and vehicle systems. This initiative is a leading example of the Intelligent Vehicle Highway Systems (IVHS) in commercial vehicle operations (CVO). The selected technologies are being integrated into a heavy vehicle management system. These technologies include: (1) automatic vehicle identification (AVI), (2) weigh-in-motion (WIM), (3) automatic vehicle classification (AVC), (4) data communication networks and systems integration. The program, initiated approximately eight years ago, consists of three phases which include assessing the feasibility of the concept, technical studies involving laboratory and field tests, and, lastly, the demonstration phase.
Technical Paper

Performance of Anti-Lock Braking System Equipped Passenger Vehicles - Part III: Braking as a Function of Tire Inflation Pressure

2002-03-04
2002-01-0306
This paper presents the results of original research conducted to evaluate the braking characteristics of passenger vehicles equipped with anti-lock braking systems (ABS) as a function of tire inflation pressure. The conditions studied in this paper are for braking on a dry, level roadway without any steering input. The objective of the paper is to study the effect of tire inflation pressure on the braking systems of common vehicles currently in-use. Comparisons are made between ABS and locked-wheel braking for each vehicle. The subject of this paper is part of the general topic of passenger vehicle dynamics and stability. Knowledge of how a vehicle performs under a variety of braking conditions is important for a variety of applications such as 1) intelligent vehicle highway systems, 2) vehicle stability and control, 3) vehicle dynamics, and 4) accident reconstruction.
Technical Paper

Performance of Anti-Lock Braking System Equipped Passenger Vehicles - Part I: Braking as a Function of Brake Pedal Application Force

2002-03-04
2002-01-0304
This paper presents the results of original research conducted to evaluate the braking characteristics of passenger vehicles equipped with anti-lock braking systems (ABS) as a function of brake-pedal application force. The conditions studied in this paper are for braking on a dry, level roadway without any steering input. The objective of the paper is to study the effect of brake-pedal application force on the braking systems of common vehicles currently in-use. Comparisons are made between ABS and locked-wheel braking for each vehicle. The subject of this paper is part of the general topic of passenger vehicle dynamics and stability. Knowledge of how a vehicle performs under a variety of braking conditions is important for a variety of applications such as 1) intelligent vehicle highway systems, 2) vehicle stability and control, 3) vehicle dynamics, and 4) accident reconstruction.
Technical Paper

Performance of anti-lock Braking System Equipped Passenger Vehicles - Part II: Braking as a Function of Initial Vehicle Speed in Braking Maneuver

2002-03-04
2002-01-0307
This paper presents the results of original research conducted to evaluate the braking characteristics of passenger vehicles equipped with anti-lock braking systems (ABS) as a function of vehicle speed at the beginning of a braking maneuver. The conditions studied in this paper are for braking on a dry, level roadway without any steering input. The objective of the paper is to study the effect of vehicle speed on the braking systems of common vehicles currently in-use. Comparisons are made between ABS and locked-wheel braking for each vehicle. The subject of this paper is part of the general topic of passenger vehicle dynamics and stability. Knowledge of how a vehicle performs under a variety of braking conditions is important for a variety of applications such as 1) intelligent vehicle highway systems, 2) vehicle stability and control, 3) vehicle dynamics, and 4) accident reconstruction.
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