Intelligent Transport System signs are set to improve road communications and motorist safety on the Western Highway.
Two signs are being installed as part of the $505 million Western Highway duplication between Ballarat and Stawell.
Another two signs are being installed as part of a $48.45 million package of upgrades between Stawell and the South Australian border.
Both projects are jointly funded by the Australian and Victorian governments.
Deputy Prime Minister and Minister for Infrastructure and Regional Development Warren Truss said a $1.5 million contract was recently awarded to Axent Holdings Pty Ltd to install the signs, with works to start mid-year.
"The signs will be installed at Kaniva, Burnt Creek, Ararat and the Ballarat bypass, four strategic locations along what is one of Victoria's busiest highways," Mr Truss said.
Federal Member for Wannon Dan Tehan said the technology will also communicate safety messages concerning speed, tailgating and fatigue.
"For example, sensors built into the road can trigger messages advising motorists to slow down," Mr Tehan said.
Federal Member for Mallee Andrew Broad said the technology will mainly be used to communicate road conditions, emergency messages and, if necessary, detour information.
"The signs will give drivers the on-road information they need to better plan their journeys and stay safe on the road," Mr Broad said.
Victorian Minister for Public Transport and Roads Terry Mulder said the signs are an important component of the two road projects which will improve road infrastructure, freight efficiency and travel times in the region.
"This technology will complement works already underway along the highway, including the construction of a duplicated highway between Ballarat and Buangor and upgrades beyond Stawell to the border," Mr Mulder said.
Works at each site will include electronic signs, road side barrier protection, closed circuit television for testing and monitoring and vehicle detector sensors in the road to collect traffic data.