skip navigation

CrimeSolutions.gov

Add your conference to our Justice Events calendar

PUBLICATIONS

NCJRS Abstract

The document referenced below is part of the NCJRS Library collection.
To conduct further searches of the collection, visit the NCJRS Abstracts Database.

How to Obtain Documents
 
NCJ Number: NCJ 241248     Find in a Library
Title: Wind-Drag Estimation in a Traffic Accident Involving a Motor Scooter and a Tractor–Trailer
Journal: Journal of Forensic Sciences  Volume:57  Issue:4  Dated:July 2012  Pages:1108 to 1113
Author(s): Chan-Seong Park, Ph.D. ; Seung-Won Jeon, M.E. ; Kyu-Jung Lee, Ph.D. ; Jun-Suk Kim, M.E. ; Jae-Geun Oh, Ph.D. ; Jong-Chan Park, Ph.D. ; Hong-Seok Lee, Ph.D. ; Young-Shik Choi, Ph.D.
Date Published: 07/2012
Page Count: 6
Document: HTML 
Type: Research (Applied/Empirical)
Language: English
Country: United States of America
Annotation: This case report describes a noncontact traffic accident involving a motor scooter and a tractor–trailer with a focus on the wind-drag effect.
Abstract: This case report describes a noncontact traffic accident involving a motor scooter and a tractor–trailer with a focus on the wind-drag effect. Researchers used load cells to measure the drag force acting on a substantially similar motor scooter when a substantially similar tractor–trailer passes by it, taking into consideration various speeds of the tractor–trailer and distances between the two vehicles. A three-dimensional steady-state flow analysis was also performed by using the CFX program for computational fluid dynamics to examine the streamlines and the pressure distribution around the tractor–trailer at various speeds. From the experiment, for a separation distance of 1.0 m (3.28 ft) and a speed of 90 km/h (55.9 mph), the maximum resultant drag force is 124.5 N (28 lb); this constitutes a degree of force that could abruptly disrupt the stability in maneuvering by an operator who is unaware of the approaching tractor–trailer. In addition, a single equation that relates the tractor–trailer speed to the drag force that acts on the motor scooter was derived on the basis of the Reynolds number (Re) and the wind-drag coefficient (Cd): Cd = 1.298 × 10-7 Re. Abstract published by arrangement with John Wiley & Sons.
Main Term(s): Forensics/Forensic Sciences
Index Term(s): Accident investigation ; Closed circuit television (CCTV) ; Motor scooters ; Traffic accidents
   
  To cite this abstract, use the following link:
https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=263338

* A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's web site is provided.