The information will be shared through a cloud-based network - a revolutionary approach to improving traffic safety.
And with the test fleet now expanding from about 50 cars to 1,000, the project is moving rapidly towards its goal of making the technology available to customers within a few years' time.
"The more information that can be shared on the road, the fewer surprises there are. And when you're driving, surprises are what you most want to avoid," said Erik Israelsson, Project Leader Cooperative ITS (Intelligent Transport System) at Volvo Cars.
"In light of that, we've developed a slippery-road alert, which notifies drivers about icy patches and contributes to making winter road maintenance more efficient.
"We're also adding a hazard-light alert, which will tell drivers if another vehicle in the area has its hazard lights on.
"With these first two features, we have a great platform for developing additional safety features. This is just the beginning."
