Research Article
Predicting Operating Speeds at Urban Multilane Roundabouts in Abu Dhabi, United Arab Emirates
Table 3
Developed speed prediction models.
| Parameter | Coefficient | -stat |
| Predicting entry speed: | Intercept | | | Entry : | | | Hourly traffic volume: | | | Proportion of heavy vehicles: | | | Coefficient of determination | | - | Significance of statistic | | - | Standard error | | - | Predicting circulating speed: | Intercept | | | Radius of the central : | | | Hourly traffic volume: | | | Proportion of heavy vehicles: | | | Coefficient of determination | | - | Significance of statistic | | - | Standard error | | - | Predicting exit speed: | Intercept | | | Exit : | | | Hourly traffic volume: | | | Proportion of heavy vehicles: | | | Coefficient of determination | | - | Significance of statistic | 0.000 | - | Standard error | 3.611 | - |
|
|
Figure 2 for the typical locations of the entry radius, the radius of the central island, and the exit radius. |