Per cent change in the volume of traffic
| Road type | Intervention group 1 | Intervention group 2 | Comparison group | F value (df) | p Value |
|---|---|---|---|---|---|
| Local access roads (lower traffic volume) | 9% ↓ (n=15) | 6% ↑ (n=27) | Stable (n=10) | 3.58 (49) | 0.03 |
| Local distributor roads (higher traffic volume) | Stable (n=16) | 9% ↓ (n=16) | 4% ↑ (n=6) | 0.98 (35) | 0.39 |