Section of the report I contributed to
1.1.1 Types of Roundabouts a) Single Lane Roundabouts As seen from figure 1, single lane roundabouts are the most standard type of roundabout design. The most common layout for this roundabout is two or more roads converging and only one lane around a center island. No traffic lights are typically found for this design, hence drivers use the ‘Mirrors-Signal-Manoeuver’ (MSM) routine to signal and inform other drivers of their exit. For example, when taking the first exit to the left, signal left when nearing the roundabout, however if the drivers plan to take a full circle, or exit on the right, signal right. This design can be expanded to multi-lane roundabouts to allow drivers to have more than one lane to decide their exit (Passmefast, nd). Figure 1 Single Lane Roundabout Note. A typical single lane roundabout design (Passmefast, nd) When it comes to its benefits, a standard roundabout is able to reduce congestion, by improving efficiency during peak hours, therefore reducing any