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Regarding the fitness to ride a bicycle under the acute influence of alcohol

International Journal of Legal Medicine volume 129, pages 471–480 (2015)Cite this article

Abstract

To determine the threshold for the absolute inability to ride a bicycle, practical cycling tests and medical examinations at different blood alcohol concentrations were performed. Special attention was given to additional medical examinations, reaction tests and alcohol consumption under real-life conditions. Seventy-eight test subjects were included in the trials (37 females, 41 males). Five test subjects participated twice; thus, there were a total of 83 evaluable trials. Alcohol-related deficits were already identifiable at very low BACs. A significant increase in gross motoric disturbances compared to the soberness state did not regularly occur until a BAC of at least 0.8 g/kg was reached. At the BAC of 1.4 g/kg and above, no test subjects were able to achieve or surpass their sober driving results. Isolated highly alcoholised test subjects rode the bike in a manner that was not conspicuously different than the other sober test persons. Contrary to the assumptions of current German legal practise, it cannot be stated that all people are ‘absolutely impaired’ to the point of being incapable of riding bicycle at BACs of at least 1.6 g/kg.

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Notes

  1. In Germany, forensic relevant blood alcohol concentrations are expressed in gram of alcohol per kilogram of blood.

References

  1. Juhra C, Wieskötter B, Chu K, Trost L, Weiss U, Messerschmidt M, Malczyk A, Heckwolf M, Raschke M (2012) Bicycle accidents—Do we only see the tip of the iceberg? A prospective multi-centre study in a large German city combining medical and police data. Injury 43:2026–2034

    Article  CAS  PubMed  Google Scholar 

  2. European Road Safety Observatory (2014) Traffic Safety Basic Facts 2012—Cyclists. http://ec.europa.eu/transport/road_safety/pdf/statistics/dacota/bfs20xx_dacota-swov-cyclists.pdf (last accessed on 30 July 2014)

  3. Schepers P, Agerholm N, Amoros E, Benington R, Bjørnskau T, Dhondt S, de Geus B, Hagemeister C, Loo BPY, Niska A (2014) An international review of the frequency of single-bicycle crashes (SBCs) and their relation to bicycle modal share. Injury prevention 2014 doi:10.1136/injuryprev-2013-040964 (last accessed on 30 July 2014)

  4. Statistisches Bundesamt (2013) Unfälle unter dem Einfluss von Alkohol oder anderen berauschenden Mitteln im Straßenverkehr 2012. https://www.destatis.de/DE/Publikationen/Thematisch/TransportVerkehr/Verkehrsunfaelle/UnfaelleAlkohol5462404127004.pdf?__blob=publicationFile (last accessed on 30 July 2014)

  5. Smith GS, Kraus JF (1988) Alcohol and residential, recreational, and occupational injuries: a review of the epidemiologic evidence. Annu Rev Public Health 9:99–121

    Article  CAS  PubMed  Google Scholar 

  6. Kraus JF, Fife D, Conroy C (1987) Incidence, severity, and outcomes of brain injuries involving bicycles. Am J Public Health 77:76–78

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  7. Crocker P, King B, Cooper H, Milling TJ (2012) Self-reported alcohol use is an independent risk factor for head and brain injury among cyclists but does not confound helmets’ protective effect. J Emerg Med 43:244–250

    Article  PubMed  Google Scholar 

  8. Grant SA, Millar K, Kenny GNC (2000) Blood alcohol concentration and psychomotor effects. Br J Anaesthesiol 85:401–406

    Article  CAS  Google Scholar 

  9. Parks V, Leister C, Palat A, Troy S, Vermeeren A, Volkerts ER, Verster JC (2002) Effects of ethanol at a blood alcohol concentration of 0.4 g/L on actual driving and memory. Eur Neuropsychopharmacol 12:S432–S433

    Article  Google Scholar 

  10. Fromme K, Katz E, D’Amico E (1997) Effects of alcohol intoxication on the perceived consequences of risk taking. Exp Clin Psychopharmacol 5:14–23

    Article  CAS  PubMed  Google Scholar 

  11. Blomberg RD, Peck RC, Moskowitz H, Burns M, Fiorentino D (2009) The Long Beach/Fort Lauderdale relative risk study. J Saf Res 40:285–292

    Article  Google Scholar 

  12. Borkenstein RF, Crowther RF, Shumate RP, Ziel WB, Zylman R, Dale A (Eds.) (1990), Role of the drinking driver in traffic accidents. Bloomington. IN: Indiana University, Department of Police Administration

  13. Allgemeiner Deutscher Automobil Club—ADAC (2013) Promillegrenzen für Fahrradfahren im Straßenverkehr—Ausland http://www.adac.de/_mmm/pdf/1304_PromilleRadfahrer_170835.pdf (last accessed on 11 July 2014)

  14. Decision of the Federal Court of Justice from 17 July 1986—4StR 543/86, BGHSt 34, 133

  15. Schewe G, Schuster R, Englert L, Ludwig O, Stertmann WA (1980) Experimentelle Untersuchungen zur Frage der alkoholbedingten Fahruntüchtigkeit von Fahrrad—und Mofafahrern. Blutalkohol 17:298–328

    Google Scholar 

  16. Schewe G, Knoess HP, Schaeufele A, Schuster R (1984) Experimentelle Untersuchungen zur Frage der alkoholbedingten Fahruntüchtigkeit bei Fahrradfahrern. Blutalkohol 21:97–109

    CAS  PubMed  Google Scholar 

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Acknowledgments

The study was funded by the German Insurance Association/German Insurers Accident Research.

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Authors and Affiliations

  1. Institute of Legal Medicine, University Hospital Duesseldorf, Duesseldorf, Germany

    Benno Hartung, Nona Mindiashvili, Stefanie Ritz-Timme, Justin Moody & Thomas Daldrup

  2. Federal Court of Justice, Karlsruhe, Germany

    Rüdiger Maatz

  3. Institute of Mathematics, Heinrich-Heine-University, Duesseldorf, Germany

    Holger Schwender

  4. Augenzentrum Friedrichstadt, Duesseldorf, Germany

    Eckhard H. Roth

  5. German Insurers Accident Research (UDV), German Insurance Association, Berlin, Germany

    Axel Malczyk

Authors
  1. Benno Hartung
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  2. Nona Mindiashvili
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  4. Holger Schwender
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  6. Stefanie Ritz-Timme
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  7. Justin Moody
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  8. Axel Malczyk
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  9. Thomas Daldrup
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Correspondence to Benno Hartung.

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Hartung, B., Mindiashvili, N., Maatz, R. et al. Regarding the fitness to ride a bicycle under the acute influence of alcohol. Int J Legal Med 129, 471–480 (2015). https://doi.org/10.1007/s00414-014-1104-z

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  • DOI: https://doi.org/10.1007/s00414-014-1104-z

Keywords

  • Alcohol
  • Bicycle
  • Impairment to drive
  • Driving performance
  • overall performance