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Journal Article

Field Demonstration of Heavy Vehicle Camera/Video Imaging Systems

2011-09-13
2011-01-2245
To help drivers monitor the road and to reduce blind spots, Camera/Video Imaging Systems (C/VISs) display live video from cameras mounted on the truck's exterior to drivers using displays inside the truck cabin. This study investigated drivers' performance with C/VISs in a real-world trucking operation. Twelve commercial drivers' performance with and without a C/VIS was continuously recorded while they each drove for four months. Half of the drivers used a commercially available C/VIS that had a side-view camera on each fender. The other drivers used an advanced C/VIS (A-C/VIS) that had side-view cameras, a rear-view camera, and night-vision capabilities. This paper presents the study's final results and expands on the preliminary results that were previously reported. Detailed analyses of drivers' involvement in Safety-Critical Events (SCEs), their lane change performance, and their opinions of the C/VISs are presented.
Technical Paper

Regulatory Issues for Signal and Marker Lamps Using Light Emitting Diodes

2002-03-04
2002-01-0384
There are a number of characteristics that are unique to light emitting diodes (LEDs) that make it difficult to ascertain whether a motor vehicle lamp using them as light sources is in compliance with certain Federal and State regulations. The vast majority of these regulations were written for incandescent light sources and should be examined for possible changes to accommodate LEDs. The advantages of using LEDs instead of incandescent sources include longer life, faster illumination time, and lower energy use. Because of these factors, they are becoming more prevalent in vehicle lighting. The following factors should be addressed so as not to impede their increasing use.
Journal Article

Field Study of Heavy Vehicle Crash Avoidance System Performance

2016-09-27
2016-01-8011
This study evaluated the performance of heavy vehicle crash avoidance systems (CASs) by collecting naturalistic driving data from 150 truck tractors equipped with Meritor WABCO OnGuardTM or Bendix® Wingman® AdvancedTM products. These CASs provide drivers with audio-visual alerts of potential conflicts, and can apply automatic braking to mitigate or prevent a potential collision. Each truck tractor participated for up to one year between 2013 and 2015. Videos of the forward roadway and drivers’ faces were collected along with vehicle network data while drivers performed their normal duties on revenue-producing routes. The study evaluated the performance of CAS activations by classifying them into three categories based on whether a valid object was being tracked and whether drivers needed to react immediately.
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