CaSE Highway Design Note 2: Horizontal Curves
This design note is an outcome of the Cost and Safety Efficient Design for Rural Highways in Developing Countries Project. The project aims to identify safe and cost-effective engineering designs. This note gives technical engineering information on building and planning roads with safe horizontal curves, and is accompanied by photographs and diagrams. The following design topics are addressed: design speed; curve radius; camber and super-elevation; skid resistance; sight distance; visual appearance; longitudinal alignment; central dividers on bends; driver alerting features; and gabions and barriers on dangerous bends.