Transport Australia Society

Lengthy waits at traffic intersections are universally disliked, leading to frustration for both drivers and passengers and carrying negative environmental and economic repercussions. Engineers have grappled with this challenge since the automobile became our primary mode of transport. Often, solutions are infrastructure-based, like constructing flyovers, bridges, or adding lanes. While these can enhance traffic flow, they often come with constraints such as costs, space, and environmental concerns. This underscores the pressing need to innovate and optimize our existing infrastructure before embarking on new builds.

Enter the XT junction design – a prime example of leveraging current infrastructure to increase capacity, accommodating diverse modes of travel, including active modes. The XT Junction is a type of displaced right turn junction that has seen some limited use in the UK and USA. It reduces the number of conflicts by introducing a second set of signalised traffic signals at the minor arm
that enables drivers to switch lanes and make the right turn unopposed.