HANOVER, N.J. (AP) Traffic cameras are here to keep your city safe.

And they’re going to be much more popular as cities around the country face rising crime and violence.

For many Americans, traffic cameras offer a way to keep a city safe, even if it means using their own eyes to see the signs.

The signs are a boon for cities and their residents, but they’re also a headache for motorists, and they have the potential to cost them tens of thousands of dollars.

A study by researchers at the Massachusetts Institute of Technology suggests that the cameras can cost cities up to $5,000 a year to maintain.

But the costs aren’t so much the cost of keeping the cameras on, said Daniel M. Dolan, a traffic safety researcher at the University of California, San Diego, who wasn’t involved in the study.

It’s the money that really matters, and that’s why cities are looking for ways to keep the cameras.

The cost of maintaining traffic cameras has ballooned from $4.7 billion in the late 1990s to $24.6 billion in 2015, according to a report by the Federal Highway Administration released this week.

Dolan says the cost is even more expensive now because of the cost to install the cameras and maintain them.

In the past, it’s been cheaper to buy the hardware and install the system.

Now, it takes an average of $1,000 to install a traffic camera, he said.

The researchers estimate the cost will climb to $50 billion in 2023, which would be more than three times the amount the agency spent on the cameras at the end of 2016.

If cities can’t keep up with the cost, then they’ll have to ask drivers to pay for their own cameras, which could cost hundreds of thousands or even millions of dollars, said John Gage, an associate professor of civil and environmental engineering at the College of William and Mary.

That’s a problem, because most drivers won’t see the cameras unless they’re asked, Gage said.

He called the study a “sham study” because it was conducted by a private company, and its results are “unsubstantiated,” according to its website.

Doran said his study is meant to help cities improve their safety by getting rid of unnecessary costs, not to make cities look bad.

The technology that will make cameras work is not yet available, so cities will have to find their own way to get them going.

Dollar signs are the easiest way to use a traffic signal, which are small metal pieces with flashing lights attached to them that look like red-and-green dollar signs.

Some cities also use dollar signs, or the signs that show where cars can park, but the signals are usually placed on a hillside or at intersections.

Cities in many states have already adopted dollar signs as the standard for traffic signals.

But Dolan said a new, more widely adopted traffic signal that uses the dollar sign could help cities reduce their costs by $5 to $10,000 annually.

A lot of people think the dollar signs are great because they make it easier to identify cars when people are driving down the street, but I don’t think it’s the right way to go,” he said, adding that a dollar sign is not a good way to prevent collisions.

The study did not look at traffic cameras that would be installed by the city and not a traffic sign that was placed by a pedestrian.

But it found that in many cities, the signal would cost between $1 and $2,000 and would require a $5 million installation.

That would put the city at a serious disadvantage in bidding for a traffic-sign project, Dolan noted.

A major reason that cities have not been able to install cameras is that the technology has yet to be developed.

A new traffic-calming system called LED traffic signals is a step in the right direction, but Dolan cautioned that there is still more to do to improve the technology and make it cost-effective.

He said a more reliable, more cost-efficient signal could save cities billions.

The biggest obstacle to using the technology is that cities don’t have the money to install them, and some of the more expensive signals are not actually installed in the first place, said Paul Bostock, a professor at the Georgia Institute of State University who has studied the costs of building and maintaining traffic signals, such as the money needed to install and maintain a signal.

The price tag for installing a traffic stop sign is typically between $100 and $300.

The research, which will be published in the journal Transportation Research Part B, also suggests that cities should consider a more affordable system for traffic signal installation.

The study suggests that a $500 sign that is mounted at each corner of a street would cost about $5 a day.

That’s about the same cost as the cost a signal at