| Sometimes when driving, never when walking: 229 (26.3%) |  |
| Never when driving, never when walking: 182 (20.9%) | |
| Sometimes when driving, sometimes when walking: 172 (19.7%) | |
| Often when driving, sometimes when walking: 158 (18.1%) | |
| Never when driving, sometimes when walking: 57 (6.5%) | |
| Often when driving, never when walking: 49 (5.6%) | |
| Often when driving; often when walking: 14 (1.6%) | |
| Sometimes when driving; often when walking: 6 (0.7%) | |
| Never when driving; often when walking: 4 (0.5%) | |
