You might have seen a special trailer that tell drivers just how fast they're going.
In Bozeman, police are stationing one in neighborhoods at people's requests. It's called SMART -- for Speed Monitoring Awareness Radar Trailer.
Friday, a group of residents asked for it on the corner of Buckrake Avenue and Breeze Lane in northwest Bozeman. People are worried drivers are not obeying the 25 mile per hour limit.
The device uses radar to display the speed of motorists driving past it. The total number of vehicles and their speeds are then recorded by the SMART trailer.
A Bozeman Police sergeant we spoke to says the program, which first started last summer, has been successful making Bozeman streets safer.
Sgt. Andy Knight told us, "Whenever we can utilize another tool to let people know about traffic -- whether its putting in extra pedestrian signs or using the SMART radar trailer -- anything we can do helps people on the road be safer and that's primarily our goal."
NBC Montana did some digging and headed out Buckrake Avenue Friday to talk to the woman who requested the SMART trailer in her neighborhood.
Anika Stern lives on the corner of Buckrake and Breeze. She tells us she's worried about her family's safety, saying, "People are cruising down this street."
The speed limit on Buckrake Avenue is 25 miles per hour, similar to many other residential street in Bozeman, but Stern tells us people sometimes don't follow the speed limit, so she requested the SMART trailer on her street.
Stern told us, "People are going 10, 15 miles over and I know how easy it is to do that, especially when you're not stopping."
We visited the SMART trailer for about an hour Friday afternoon, and while no one was speeding while we were there, Stern says the problem mainly occurs during commuting hours.
She explained, "8 to 9 [a.m.] and around 5 [p.m.] it gets particularly bad."
Right across the street from Stern is a park. She's worried that pets and children playing might walk into traffic going too fast to stop in time.
Stern said, "We try to teach them to look both ways, but kids are kids and I'm concerned that someone might get hit."
Kara Albrecht, another Buckrake parent, says she too sees people going 35-40 in the 25 zone.
Albrecht told us, "I think they really need to re-look at the zoning and where they allow people to go certain speed limits."
Albrecht wants the smart trailer to send a message not only to drivers, but city officials in hopes of changing things near her home.
"To figure out, can we get a stop sign, can we get a sign that says children at play?" said Albrecht.
It is a desire shared by Stern, who is eagerly waiting to see just what the SMART trailer can teach her about how fast people are really going on her street.
Stern said, "Hopefully that can be put to good use."
Here's what happens after the SMART trailer spends a day on the streets: The information collected is recorded by police as well as given to the individual who requested the trailer.
Police look at the speed and number of vehicles who passed it and decide whether or not to increase patrols in the area.
However, police tell us data collected is often skewed by drivers who specifically slow down or even speed up because of the use of the SMART trailer. Data is not used to look into changing speed limits or adding road signs.
If no one requests the SMART trailer on a specific street, police can put it anywhere they would like in the city.