2007 National Roadside Survey of Alcohol and Drug Use by Drivers

2007 National Roadside Survey of Alcohol and Drug Use by Drivers: Drug ResultsBAC (g/dL)Time ofNBetweenDay Age Drug Category (Unweighted) Zero Zero and .08 .08+Illegal 64 80.8% 12.6% 6.6%Medications 67 92.2% 7.0% 0.8%45-64 Illegal & Medications 9 33.3% 60.9% 5.8%Negative 1,075 90.1% 8.7% 1.3%Overall 1,215 89.2% 9.2% 1.6%Illegal 0 NA NA NAMedications 9 83.6% 16.4% 0.0%65+ Illegal & Medications 0 NA NA NANegative 139 88.7% 6.6% 4.7%Overall 148 88.6% 6.8% 4.6%“Medications” includes prescription and over-the-counter drugs.In this table, percentages are weighted.When examining drug category by gender and time of day (Table 45), male drivers who testedpositive for “Illegal” drugs in both the daytime and nighttime samples also had greaterpercentages of alcohol-positive results than their female counterparts. However, the small samplesize precluded valid statistical testing on the daytime sample. Within the nighttime sample,differences were statistically significant (p < .01).Table 45. BAC of Drivers by Drug Category, Gender, and Time of Day (Oral Fluid)BAC (g/dL)Time ofNBetweenDay Gender Drug Category (Unweighted) Zero Zero and .08 .08+Illegal 87 96.7% 2.5% 0.8%Medications 35 98.5% 1.5% 0.0%Males Illegal & Medications 9 95.6% 4.4% 0.0%Negative 901 99.1% 0.8% 0.1%DaytimeOverall 1,032 98.9% 0.9% 0.2%Illegal 38 98.4% 1.6% 0.0%Medications 72 100.0% 0.0% 0.0%FemalesIllegal & Medications 5 100.0% 0.0% 0.0%Negative 696 99.3% 0.5% 0.3%Overall 811 99.3% 0.5% 0.2%Illegal 410 74.3% 18.0% 7.6%Medications 106 96.0% 3.1% 1.0%MalesIllegal & Medications 41 76.6% 22.3% 1.1%Negative 3,048 90.0% 7.9% 2.1%NighttimeOverall 3,605 88.1% 9.2% 2.7%Illegal 164 84.2% 15.2% 0.6%Medications 95 87.5% 11.0% 1.5%FemalesIllegal & Medications 19 99.0% 1.0% 0.0%Negative 1,972 90.4% 8.3% 1.2%Overall 2,250 89.9% 8.9% 1.2%“Medications” includes prescription and over-the-counter drugs.In this table, percentages are weighted.58