International Journal of Legal Medicine

, Volume 130, Issue 3, pp 711–721

The effect of cannabis on regular cannabis consumers’ ability to ride a bicycle

Authors

    • Institute of Legal MedicineUniversity Hospital Düsseldorf
  • Holger Schwender
    • Institute of MathematicsHeinrich-Heine-University
  • Eckhard H. Roth
    • Augenzentrum Friedrichstadt
  • Florence Hellen
    • Department of PsychiatryHeinrich-Heine-University
  • Nona Mindiashvili
    • Institute of Legal MedicineUniversity Hospital Düsseldorf
  • Annette Rickert
    • Institute of Legal MedicineUniversity Hospital Düsseldorf
  • Stefanie Ritz-Timme
    • Institute of Legal MedicineUniversity Hospital Düsseldorf
  • Almut Grieser
    • Department of AnaesthesiologyUniversity Hospital Düsseldorf
  • Fabio Monticelli
    • Institute of Legal MedicineParis-Lodron-University
  • Thomas Daldrup
    • Institute of Legal MedicineUniversity Hospital Düsseldorf
Original Article

DOI: 10.1007/s00414-015-1307-y

Cite this article as:
Hartung, B., Schwender, H., Roth, E.H. et al. Int J Legal Med (2016) 130: 711. doi:10.1007/s00414-015-1307-y

Abstract

To assess the effects of cannabis on the ability required to ride a bicycle, repetitive practical cycling tests and medical examinations were carried out before and after inhalative consumption of cannabis. A maximum of three joints with body weight-adapted THC content (300 μg THC per kg body weight) could be consumed by each test subject. Fourteen regular cannabis-consuming test subjects were studied (12 males, 2 females). In summary, only a few driving faults were observed even under the influence of very high THC concentrations. A defined THC concentration that leads to an inability to ride a bicycle cannot be presented. The test subjects showed only slight distinctive features that can be documented using a medical test routinely run for persons under suspicion of driving under the influence of alcohol or drugs.

Keywords

Cannabis THC Bicycle Ability to ride Ability to drive Driving under the influence DUI Cannabis influence factor CIF

Copyright information

© Springer-Verlag Berlin Heidelberg 2015