Publication detail

Restrictions of Using Speedometer Readings for Determining Vehicle Collision Speed

KŘIŽÁK, M. BRADÁČ, A. SEMELA, M. MIKULEC, R.

Original Title

Restrictions of Using Speedometer Readings for Determining Vehicle Collision Speed

English Title

Restrictions of Using Speedometer Readings for Determining Vehicle Collision Speed

Type

conference paper

Language

en

Original Abstract

Investigation or estimation of vehicle collision speed is one of the most important tasks during traffic accident analysis. The speedometer needle is sometimes stuck showing possible speed data especially at severe road accident. That is generally an additional possible indicator for speed estimation for forensic expert. The paper is aimed at accuracy and differences between real speed data and display of speedometer needle data. The possible data inaccuracy can be observed during vehicle braking or in cases of driving stability loss (vehicle skid). Results of correlations between speed registered by speedometer and actual speed have been found during lock-up of wheels through stability loss skid, during acceleration with spinning wheels, and during braking manoeuvre measurements at various friction conditions. Through aforementioned manoeuvres, significant data differences have been shown and explained in this paper.

English abstract

Investigation or estimation of vehicle collision speed is one of the most important tasks during traffic accident analysis. The speedometer needle is sometimes stuck showing possible speed data especially at severe road accident. That is generally an additional possible indicator for speed estimation for forensic expert. The paper is aimed at accuracy and differences between real speed data and display of speedometer needle data. The possible data inaccuracy can be observed during vehicle braking or in cases of driving stability loss (vehicle skid). Results of correlations between speed registered by speedometer and actual speed have been found during lock-up of wheels through stability loss skid, during acceleration with spinning wheels, and during braking manoeuvre measurements at various friction conditions. Through aforementioned manoeuvres, significant data differences have been shown and explained in this paper.

Keywords

speedometer; velocity; vehicle; comparison; difference

Released

17.05.2018

Publisher

UNIV ZAGREB, FAC CIVIL ENGINEERING

Location

ZAGREB

ISBN

978-953-8168-25-3

Book

Road and Rail Infrastructure V, Proceedings of the Conference CETRA 2018

Pages from

1659

Pages to

1664

Pages count

6

Documents

BibTex


@inproceedings{BUT148095,
  author="Michal {Křižák} and Albert {Bradáč} and Marek {Semela} and Roman {Mikulec}",
  title="Restrictions of Using Speedometer Readings for Determining Vehicle Collision Speed",
  annote="Investigation or estimation of vehicle collision speed is one of the most important tasks during traffic accident analysis. The speedometer needle is sometimes stuck showing possible speed data especially at severe road accident. That is generally an additional possible indicator for speed estimation for forensic expert. The paper is aimed at accuracy and differences between real speed data and display of speedometer needle data. The possible data inaccuracy can be observed during vehicle braking or in cases of driving stability loss (vehicle skid). Results of correlations between speed registered by speedometer and actual speed have been found during lock-up of wheels through stability loss skid, during acceleration with spinning wheels, and during braking manoeuvre measurements at various friction conditions. Through aforementioned manoeuvres, significant data differences have been shown and explained in this paper.",
  address="UNIV ZAGREB, FAC CIVIL ENGINEERING",
  booktitle="Road and Rail Infrastructure V, Proceedings of the Conference CETRA 2018",
  chapter="148095",
  doi="10.5592/CO/CETRA.2018.766",
  howpublished="print",
  institution="UNIV ZAGREB, FAC CIVIL ENGINEERING",
  year="2018",
  month="may",
  pages="1659--1664",
  publisher="UNIV ZAGREB, FAC CIVIL ENGINEERING",
  type="conference paper"
}