Edition 3.0  contains technical changes and minor editorial changes to Sections 1.3, 1.6, 1.9, 4.3, 4.4, 4.5, 4.7, 4.9, 5.3, 6.3, and 7 and the addition of information relating to the extended design domain for vehicle entry path radii. Updates have been made throughout this edition to include new and updated reference material and cross-references added to other Guides, including:

The heavy vehicle industry and community are invited to share their views on the management of overseas licensed heavy vehicle drivers. Complete the survey by Friday 12 July 2024.

Part 4B also provides information on pedestrian and cyclist treatment at roundabouts and related topics such as pavement markings, signs and landscaping.

Designers should refer to other relevant parts of the Austroads Guide to Road Design and to the Austroads Guide to Traffic Management Part 6: Intersections, Interchanges and Crossings Management that cover traffic management and road use aspects of roundabouts and criteria for the appropriate selection and design of intersections.

More than 1,000 people have now completed best practice roadside barrier design, installation and maintenance training as part of the ASHTAS initiative managed by Austroads.

The Guide to Road Design Part 4B: Roundabouts provides road designers and other practitioners with guidance on the geometric design of roundabouts. It covers design principles and procedures, and guidelines for all the key elements, thus enabling practitioners to develop safe and efficient layouts.

Our new ZELA décor Surface Mount has a trim and inner combination to suit every style. Choose from textured white or black trim, and black, white, copper, gold or bronze inner options.

Edition 3.1 of the Guide replaces figure 1.1 and contains technical changes and minor editorial changes to Sections 1.6, 2.2, 4.1, 4.4, 4.5 and 5.3.

Edition 3.2 contains technical changes and editorial changes to sections 1.8, 3.2.4, 4.2, 4.6, 5.1, 5.2 5.3.3, 5.3.6, and 10.1. It also contains new guidance in Section 4.11.3 for mini roundabouts, Section 4.11.4 for radial roundabouts and Section 5.3.7 for cyclist and pedestrian priority at roundabouts.