Table 28.1: Road Classification and Pavement Structure Classification Type of Road Traffic Volume Design Recommended Recommended pavement (v.p.d.) or Speed Carriageway structure. Two layer dwelling (km/hr) Width (metres) basecourse construction. units (du) (metres) Depth (mm) and aggregate type code (See Code of Practice for Subdivision and Land Development D3.2.4, D3.2.5) Parking Traffic Total Lower layer Upper layer Local Roads Short cul-de-sac <20 1 x 2.0 m 1 x 3.5 m 5.5 (<100 m) Urban Long cul-de-sac >20 40 1 x 2.0 m 1 x 4 m 6 100 SBAP60 100 GAP 40 (> 100 m) Minor access <100 2 x 2.0 m 1 x 3.5 m 7.5 Rural <200 - 1 x 3.5 m 3.5 Use SHPDRM design method Collector Roads Urban 400 - 1000 2 x 2.25 m 1 x 3.5 m 8.0 200 SBAP60 100GAP40 Rural 200 to *100 - 2 x 3.0 m 6.0 Industrial 1000 50 2 x 2.5 m 1 x 3.5 m 8.5 Use SHPDRM design method Urban 800 to *100 2 x 2.0 m 2 x 3.5 m 11 200 GAP 40 150 TNZ AP40 Rural 3000 50 - 2 x 3.5 m 7.0 Industrial >1000 50 2 x 2.5 m 2 x 3.5 m 12 SHPDRM use design method Arterial Routes Rural 1000 - 4000 *100 - 2 x 3.5 m 7 Use SHPDRM design method Urban Over 3000 50 Specific design * Wherever practicable but not less than 70 km/hr unless topography constrains to a lower speed value. Appropriate controls are then required. 2 M8a r-l b1o2r ough Sounds Resource Management Plan