With a cheery chime, a small, squarish minibus eased forward and tentatively took to the "highway" Tuesday morning, advancing to a speed of 3 miles per hour in the frigid morning air.

The road was actually part of the Minnesota Department of Transportation's MnROAD cold-weather pavement testing facility, a self-contained area in Monticello not open to normal traffic.

And the bus — more like a moving pod, really — is part of MnDOT's Autonomous Bus Project, a pilot program for pilotless vehicles that will help determine how they operate in cold weather.

The clime in Monticello did not disappoint, as MnDOT hosted a phalanx of media to show off the project. The public will get a peek during Super Bowl LII festivities, when the buses are demonstrated on Nicollet Mall.

"I can't think of a better day in Minnesota to show off and test this autonomous technology," declared MnDOT Commissioner Charles Zelle. "We have just the right amount of snowflakes, a little ice on the road. As we think about the future, autonomous vehicles are being tested and have gained great attention throughout the world and certainly in the United States. We have a unique opportunity to test this vehicle in compromised conditions," Zelle said. "This is not California."

The technology is being tested throughout the country, from Uber's driverless taxis in Pittsburgh to autonomous minivans operated by Waymo (Google's driverless car company) in Phoenix. State highway departments such as MnDOT will provide the infrastructure as well as the policy and regulatory know-how to help welcome them.

MnDOT is held a press event at the research center in Monticello, Minn. to introduce its autonomous bus they have been testing in harsher Minnesota condition on Tuesday, December 12, 2017. The bus is level 4 autonomous and fits about 10 people. In the bus are Joseph Holmes with Easy Mile, Michael Kronzer, with MnDot and a man who was operating the vehicle that was struggling in the cold and snowy weather.

For the most part, these tests tend to take place in milder climates. And, while many mid- to high-end vehicles include some autonomous features, little research has been done involving transit buses, according to MnDOT. As Zelle noted, MnDOT's autonomous bus test will have broader reach — "not just Teslas for the very few."

From a transportation standpoint, experts say we live in a potentially transformative time — with driverless technology affecting road safety, congestion, land-use decisions, mobility for seniors and the disabled, and the consumption of fossil fuel.

It's hard to know when driverless vehicles will go mainstream, but the University of Minnesota's Frank Douma says it will be sooner than most people think. "One thing I've learned about this technology is that if you put a date on it, it will happen earlier," Douma said.

MnDOT's test program uses a shuttle bus manufactured by EasyMile, a French company specializing in driverless technology. Maplewood-based 3M provides films that protect and enhance the sensors in inclement weather.

The heated vehicle can hold up to 12 people (sitting and standing), and its decor can be described as utilitarian-meets-IKEA. It has no steering wheel or gas pedal. It runs on a pre-mapped route and the average speed is about 15 miles per hour.

Joseph Holmes, EasyMile's sales director, says the bus has been tested in California and in the Arlington, Texas, entertainment district between the Dallas Cowboys and Texas Rangers stadiums. "We've had no accidents," Holmes said, noting the buses are designed to work in more controlled environments, such as preplanned communities.

EasyMile has also tested the vehicle in Finland and Norway, but Minnesota will be the first cold-weather test case in the United States. The project will last through February and take into account the road salt used on Minnesota's roads.

A series of lasers helps the vehicle detect potential roadblocks, such as pedestrians and bicyclists. On Tuesday, as the bus toddled along the test track, it stopped when a snow squall suddenly kicked up near its nose, perhaps mistaking it for a polar bear. It also halted as it tried to reconnect to its server.

The vehicle will be tested on a closed segment of Nicollet Mall from 3rd Street to 4th Street on Jan. 26-28, as well as Feb. 2-3. More information will be posted on MnDOT's website.

Douma, a transportation scholar at the U's Center for Transportation Studies, said the demonstration will help people overcome their fear of driverless vehicles.

"It's a matter of people getting out and getting used to it," he said. "The Nicollet Mall demonstration will introduce the technology, let people get on it and see if it works."

As MnDOT's Zelle put it, "People used to be afraid to use elevators, too."