Table 2.
Driving performance [means (SD)] at T1 and T2 (30 min and 210 min) after vaporization of placebo, THC-dominant, and THC/CBD-equivalent cannabis
| T1 | T2 | |||||
|---|---|---|---|---|---|---|
| Placebo | THC | THC/CBD | Placebo | THC | THC/CBD | |
| Car-following task | ||||||
| SDLP (cm) | 19.29 (6.47) | 23.21 (4.77)* | 23.50 (7.36)* | 19.00 (5.11) | 22.86 (6.00)* | 24.21 (6.39)** |
| Headway (m) | 75.38 (23.32) | 85.28 (30.48) | 86.01 (41.48) | 71.82 (23.81) | 82.91 (27.04) | 90.13 (36.59) |
| SD headway (m) | 29.10 (11.92) | 30.82 (12.97) | 40.59 (25.97) | 28.22 (13.50) | 34.33 (14.67) | 42.79 (24.75)* |
| Secondary driving task | ||||||
| SDLP (cm) | 27.07 (5.41) | 28.43 (5.52) | 28.5 (6.62) | 28.43 (6.31) | 28.36 (5.79) | 28.71 (6.34) |
| Speed (km/h) | 82.16 (4.02) | 81.47 (3.17) | 82.72 (3.48) | 84.21 (3.11) | 83.72 (3.56) | 83.46 (3.41) |
| SDSP (km/h) | 26.96 (3.46) | 27.28 (2.19) | 25.78 (1.88) | 26.91 (2.34) | 26.30 (2.17) | 26.45 (1.57) |
SDLP standard deviation of lateral position, SD distance standard deviation of distance, SDSP standard deviation of speed. Bonferroni post hoc tests were used to compare treatment means at each level of time. *Indicates significantly different from placebo (p < 0.05). **Indicates significantly different from placebo (p < 0.01)