Canberra bus commuters will soon know how far away their bus is after the installation of 'real time' passenger information systems.

The ACT Government will start installing the information systems across the territory's major bus interchanges.

From 2013 passengers will be able to access 'real time' information such as arrival times through their mobile phones and touch screen displays at bus stations.

The ACT Government has selected the company Trapeze Austrics to roll out the technology.

The company has delivered similar systems in Europe, the United States and Singapore.

The ACT Government committed $12.5 million over three years in its 2010-2011 budget for the project.

The NXTBUS system will be fully commissioned by 2013.