Road cutting slope design in tropical terrains often tends to be conservative when based on the methods of classical slope stability analysis. This could be attributed to the difficulties encountered in the accurate characterization of tropically weathered rocks and soils, and the time-dependent improvement in soil properties resulting from haematite-hardening of the slope faces. A field-orientated approach, based on a slope performance survey of both natural and existing cutting slopes in similar geo-environmental settings, often tends to provide a more reliable alternative for the design of cutting slopes along new roads. This paper presents the results of slope performance studies carried out at selected locations in Ghana as a guide to designing cutting slopes along two proposed road projects in the southwestern sector of the country. It is recommended that slopes in competent lithologies along the proposed roads should be cut at steep inclinations of 72° and 80° while slopes in the less competent lithologies should be cut at flatter inclinations of 45°.