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. 2011 Oct;55:325–334.

Table 2.

Overall Driving Performance

CDR 1 CDR 0.5 Controls p
Accidents (run off road) 3.67 ±3.32a 2.25 ±2.19a 0.58 ±0.87b <.0001
Collisions 3.1 ±2.6a 3.0 ±1.6a 0.8 ±1b <.0001
Ped. Collisions 0.67 ±1.0a 0 ±0b 0.06 ±0.3b .0005
Run time (secs.) 1787 ±362a 1687 ±511a 1361 ±157b <.0001
Traffic light errors 2.89 ±1.69a 1.87 ±1.55a .051 ±1.05b <.0001
Mean traffic light reaction time 1.08 ±0.57 1.2 ±0.3 1.05 ±0.51 .6117
“Signal Ahead” sign errors 0.78 ±1.09a .038 ±1.06a,b 0.079 ±0.27b .001
Intersection errors 1.44 ±0.88 1.25 ±1.0 1.13 ±0.91 .6073
Speed exceedances 9.56 ±4.25 9.13 ±6.17 9.21 ±6.86 .9877

Means with the same letter are not significantly different from each other at p≤0.05