Estimate* | 95% CI | |
Intercept (km/hour) | 59.98 | 58.15 to 61.86 |
Type of road | ||
National road (paved) | (Ref) | |
Tertiary road (non-paved) | 0.45 | 0.45 to 0.45 |
Unclassified (non-paved) | 0.46 | 0.45 to 0.46 |
Type of vehicle | ||
Car/ambulance | (Ref) | |
Motorcycle | 1.15 | 1.13 to 1.17 |
Residential area | ||
No | (Ref) | |
Yes | 0.67 | 0.67 to 0.67 |
Bridge | ||
No | (Ref) | |
Yes | 0.70 | 0.69 to 0.7 |
Distance since trip started | ||
Within 2 km | (Ref) | |
Over 2 km | 1.18 | 1.18 to 1.19 |
Slope (%, log10) | 0.68 | 0.68 to 0.68 |
Rainfall (mm, log10) | 0.49 | 0.47 to 0.5 |
*Model coefficients and CIs are exponentiated to reflect incidence rate ratio (relative change in average speed per unit change in the explanatory variable), except for the intercept which reflects absolute value in kilometre per hour.