Appendix F
Safety camera site selection criteria for new core sites
| Fixed speed camera sites | Mobile speed camera sites | Routes | Red light or combined red light speed camera sites | |
|---|---|---|---|---|
| Site or route length requirements | Between 0.4 km and 1.5 km | Between 0.4 km and 5km | Between 5km and 20km | From stop line to stop line in direction of travel |
| Number of killed and serious collisions (KSI) | At least 3 KSI collisions per km in the baseline period*. | At least 1 KSI collisions per km (average) in the baseline period*. | A minimum of 3 existing core sites within the length. (There are no further requirements) OR Has at least 1 KSI collision per km (average) in the baseline period* and meets the PIC total value below. | At least 1KSI collision within the junction in the baseline period*. Selection must be based upon a collision history of red light running. |
*The baseline period is the most recent 36 month period available when site selection is carried out. | ||||
| Total value required | Built up | Non built up 18 /km | Built up 11 /km | Non built up 9/km | Built up 8 /km | Non built up 6 /km | 10 |
| For sites up to 1km the above value is required. For sites longer that 1km the value is per km. | |||||||
| 85th percentile speed at proposed sites | Speed survey shows free-flow 85th percentile speed is at or above ACPO enforcement threshold. | Not applicable | ||
| Site conditions that are suitable for the type of enforcement proposed | Loading and unloading of camera can take place safely. | Location for mobile enforcement is easily accessible and there is space for enforcement to take place in a visible, legal and safe manner. | The location of collisions in the baseline period will determine the length of route. | Loading and unloading the camera can take place safely. |
| Suitability of site for camera enforcement | The Highway Authority must undertake a site survey, demonstrating the following:
| |||
New camera sites will be selected using an assessment that includes the level of fatal, serious and slight collisions. The combined level of collisions will be expressed as a numerical scale (see below) and assessed relative to the road classification for the site - whether it is either a 'built up' or 'non-built up' area and according to the type of site for example: route, fixed, mobile or red light. Fatal or serious injury collision = 5 (for example: 2 serious collisions = 10) | ||||