A one-way road provides for vehicular traffic travelling in a single direction. It could have one or more lanes and could be in either an urban or rural environment.
The principles for road marking and delineation for one-way roads should be similar to that described for two-lane two-way roads, or multi-lane roads except where otherwise stated in Table 2‑40.
Table 2‑40: Delineation devices for one-way roads
| One-lane one-way roads | |||
|---|---|---|---|
| Delineation device | Left-hand edge | Between lanes | Right-hand edge |
| Edgelines | Refer to edgelines | NA | Refer to edgelines |
| Lane lines | NA | NA | NA |
| ATP | Refer to edgelines in Table 2‑29 | NA | Refer to edgelines in Table 2‑29 |
| RRPMs | Refer to left-hand (shoulder) edgeline | NA | Yellow as described in raised median or median barrier edgelines |
| Multi-lane one-way roads | |||
| Left-hand edge | Between lanes | Right-hand edge | |
| Edgelines | Refer to edgelines | NA | Refer to edgelines |
| Lane lines | NA | Refer to lane lines | NA |
| ATP | Refer to edgelines in Table 2‑29 | Refer to lane lines in Table 2-28 | Refer to edgelines in Table 2‑29 |
| RRPMs | Refer to left-hand (shoulder) edgeline | Refer to lane line markers in conjunction with paint lines | Yellow as described in raised median or median barrier edgelines |
There may be situations where a contra-flow cycle lane could be used to provide for cycling on a route, for example, on one-way streets where a bylaw allows this. This treatment should only be applied in low speed and low-volume environments, and where a suitable transition at each end of the street can be achieved. Treatments at any side streets or driveways should also be considered carefully. For guidance on the provision of contra-flow cycling facilities, refer to contra-flow facilities.
