Citation

Harper J, Smart W, De Roos M. Proc. Australas. Road Safety Res. Policing Educ. Conf. 2011; 15.

Copyright

(Copyright © 2011, copyright holder varies, Publisher Monash University)

DOI

unavailable

PMID

unavailable

Abstract

The Seagull junction treatment is at the high end of at grade intersection treatments. It provides separate lanes for both right and left turns off the through road. It also provides a separate lane for vehicles turning right from the side road to enter and accelerate to through traffic speed before merging with through traffic. There are many Seagull junction layouts across the road network. They exist with many variations in design layout, road geometry and site conditions. They also have varying safety records and have been the object of much discussion about their operational safety. This case study considers three variations of a Seagull layout that have been in place at the junction of the Princes Highway and Island Point Road approximately 20km south of Nowra on the south coast of NSW. It examines the impact that each of these layouts had on the operational safety of the junction.