Part 3 – Road Works
3.12 Vehicle Crossings
3.12.4 Rural and Rural-Residential Vehicle Crossings – Seal Distance from the Carriageway to the Property Boundary
For new vehicle entranceways/crossings or those over which there is a change or increase in intensity in scale of use, they should be constructed in accordance with Drawing DG 307. The seal distance shall be determined based on the following categories:
- Visibility at the Entranceway
- Gradient of Entranceway
- Vehicles Per Day Past the Entranceway
- Posted Speed Limited
- Locality of Other Entranceways
- Effects of Other Entranceways
- Width of Road
The following assessment matrix shall determine the minimum seal distance required from the edge of the carriageway (measured at the centrepoint of the crossing):
| Category | Criteria | Weighting | Evaluation Explanation |
| Visibility at Entranceway | Excellent visibility | 10 | More than 300 m |
| In accordance with DM | 5 | Meets requirement as per DM | |
| Poor visibility | 0 | Does not meet requirement | |
| Gradient of Entrance (12 m back) | Flat gradient | 20 | Gradient between 1:12 and 12:1 |
| Steep gradient | 0 | Gradient steeper than 1:12 and 12:1 | |
| VPD past the Entranceway | Very low volume traffic | 30 | Less than 15 m |
| Low to medium traffic volume | 20 | 150–500 | |
| Medium to high traffic volume | 10 | 500–1500 | |
| Very high traffic volume | 0 | above 1500 | |
| Posted Speed Limit | Low speed limit | 5 | less than 100 km/h |
| Open road | 0 | 100 km/h or more | |
| Locality of other Entranceways | Entrances are well away from others | 5 | Meets requirement as per DM |
| Very close to other entranceways | 0 | Does not meet requirement | |
| Effects of Activity on Entranceway | Only cars use it | 15 | Light vehicles only |
| Occasional stock/delivery truck | 10 | Occasional stock/delivery truck | |
| Tanker and occasional stock truck | 5 | Tanker and occasional stock truck | |
| Higher use than tanker and occasional stock truck | 0 | Higher use than tanker and occasional stock truck | |
| Width of Road (sealed carriageway) | Wide road way | 15 | Wider than 7 m |
| Medium width road way | 10 | Between 7 and 6 m | |
| Narrow road way | 0 | Less than 6 m | |
| Total | 100 |
Scoring
Score >70 1 m of seal required
Score 50–70 3 m of seal required
Score <50 5 m of seal required
Exclusions
For roads that are not sealed no seal shall be required for the entranceway.
For rights of way or access legs serving 3 or more lots the seal from the carriageway shall extend to the property boundary.
Figure 3.2 (click to enlarge)
