Road layout

The ONRC function, including traffic volumes should provide the basis for the level of road marking and delineation devices used (Table 2‑2). However, it is recognised that roads also fall in to various categories based on the road layout.

Table 2‑2

This chapter discusses road marking use in general but also recognises where there are differences for certain road layouts. The specific information on certain road layout types and information on low-volume roads is included in the following sections:

• Low-volume roads
• One-way roads
• Two-lane two-way roads
• Two plus one roads
• Multi-lane roads

In summary, for the purposes of this document there are five main road layout types. An illustration of each of these types and its association with the ONRC is provided in Table 2‑2. Higher levels of delineation and separation than indicated in the following tables may be appropriate depending on traffic speeds and crash history.

Table 2‑2: Relationship between road layout and ONRC

Table 2‑2 note:

1. The blue shaded areas indicate where likely relationship exists.

In addition, Table 2‑3 illustrates types of markings and delineation devices and their typical use for various road layouts.

Table 2‑3: Relationship between delineation type and road layout

Table 2‑3 note:

1. The blue shaded areas indicate where delineation types are likely to be used.