Bicycling under the influence of alcohol

Abstract Objective According to international data estimates the proportion bicyclists with a positive Blood Alcohol Concentration (BAC) who are involved in accidents ranges from 15% to 57%. This large variance, and the fact that the reliance on accident statistics means that only the BAC of injured bicyclists is being collected, shows that we do not really know what the average and variation in BAC of bicyclists is, particularly on nights out. Method On a total of four nights between 5 PM and 8 AM BAC levels of bicyclists were collected with a Breathalyser ( N  = 687). Samples were collected in two Dutch cities, one with a high (Groningen), and one with a modest, student population (The Hague). Results The results showed that the percentage of bicyclists who had alcohol in their blood rose over the night from 7.7% at 6 PM to over 89% after 1 AM. Furthermore, the percentage of bicyclists with an illegal BAC above 0.5 g/l rose from zero percent at 6 PM to 68% at 1 AM. The average BAC of bicyclists with a BAC above zero was 0.79 g/l. Differences between the two cities were limited. Conclusion Cycling with illegal levels of blood alcohol turns out to be very common on nights out in the Netherlands.

[1]  S P Baker,et al.  Alcohol in fatally injured bicyclists. , 1994, Accident; analysis and prevention.

[2]  Dick de Waard,et al.  Effects of alcohol (BAC 0.5‰) and ecstasy (MDMA 100 mg) on simulated driving performance and traffic safety , 2011, Psychopharmacology.

[3]  Bicycle helmets benefits might be overestimated. , 2010, The American journal of emergency medicine.

[4]  R. Mullins,et al.  Injuries resulting from bicycle collisions. , 1995, Academic emergency medicine : official journal of the Society for Academic Emergency Medicine.

[5]  Dietmar Otte,et al.  Alcohol consumption, helmet use and head trauma in cycling collisions in Germany. , 2014, Accident; analysis and prevention.

[6]  H. Meislin,et al.  A prospective investigation of the impact of alcohol consumption on helmet use, injury severity, medical resource utilization, and health care costs in bicycle-related trauma. , 1995, The Journal of trauma.

[7]  Olle Bunketorp,et al.  Cycling and alcohol. , 2002, Injury.

[8]  I. M. Bernhoft,et al.  Prevalence and Risk of Injury in Europe by Driving with Alcohol, Illicit Drugs and Medicines , 2012 .

[9]  E. Labouvie,et al.  Relation of personality to alcohol and drug use in adolescence. , 1986, Journal of consulting and clinical psychology.

[10]  S. Galea,et al.  The built environment and alcohol consumption in urban neighborhoods. , 2007, Drug and alcohol dependence.

[11]  R Honkanen,et al.  The role of alcohol in nonfatal bicycle injuries. , 1990, Accident; analysis and prevention.

[12]  Karla A. Lawson,et al.  Alcohol, bicycling, and head and brain injury: a study of impaired cyclists' riding patterns R1. , 2010, The American journal of emergency medicine.

[13]  G. Borges,et al.  The more you drink, the harder you fall: a systematic review and meta-analysis of how acute alcohol consumption and injury or collision risk increase together. , 2010, Drug and alcohol dependence.

[14]  S P Baker,et al.  Use of alcohol as a risk factor for bicycling injury. , 2001, JAMA.

[15]  Marjan Hagenzieker,et al.  Risk of injury by driving with alcohol and other drugs , 2011 .

[16]  Edmund R. Volkerts,et al.  Nonfatal Bicycle Accident Risk After an Evening of Alcohol Consumption , 2008 .

[17]  C. Nagoshi,et al.  Impulsivity, sensation seeking, and behavioral and emotional responses to alcohol. , 1991, Alcoholism, clinical and experimental research.

[18]  S. Nolen-Hoeksema,et al.  Gender differences in risk factors and consequences for alcohol use and problems. , 2004, Clinical psychology review.

[19]  D A M Twisk,et al.  An epidemiological study of the risk of cycling in the dark: the role of visual perception, conspicuity and alcohol use. , 2013, Accident; analysis and prevention.