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Red-light cameras catching crashes on video


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Murfreesboro’s red-light cameras have been successful in catching vehicles running lights, but it’s unclear whether they have reduced traffic accidents, a Police Department official said.

“The main goal of this is to not run red lights,” said Kyle Evans, MPD spokesman. “This is about safety and not the revenue generated by this.”

Evans said three months is too early to tell if the cameras have had an effect on reducing the number of side-angle collisions, or T-bones.

These intersections – Memorial and Northfield boulevards, South Rutherford and Mercury boulevards, South Church Street and Middle Tennessee Boulevard, Old Fort Parkway and West Thompson Lane, Northwest Broad Street and West Northfield Boulevard and Broad and South Church streets – were chosen specifically because they have the most crashes and injuries resulting from red-light running, Evans said.

“We have seen several accidents caught on tape, though,” Evans said.

He said one was at the intersection of South Church Street and Middle Tennessee Boulevard when a car ran a red light by 6 seconds and hit two cars crossing the intersection.

“That is a perfect example of the types of accidents we are trying to reduce,” Evans said.

But people are still running the lights.

Since going online June 1, the city has sent out 3,163 citations to vehicles caught on tape running red lights. And as the months have worn on, more people are being caught.

The city has thrown out even more, a whopping 6,268, with an additional 702 under review by TraffiPax, the company in charge of administering the camera system.

“The ones (thrown out) that are preventable by Traffipax will be corrected by reducing the number of non-issueable citations,” Evans said, adding citations the city is unable to issue include emergency vehicles, vehicles that stop on the line or turn right on red and funeral processions.

The city contracted with Traffipax, Inc. to install and operate the automated system at a cost of more than $30,000 per month. The city has the potential to collect $158,150 from citations issued, but has only collected slightly more than $19,000.

Re-timing lights

The Murfreesboro Traffic Department has spent more than a year and around $92,000 to study red-light timing along the town’s major roadways and expects to adjust traffic flow through 39 intersections in the coming months.

“We’re trying to remodel our system timing as a whole and make sure the retiming provides the most efficient timing through a series of intersections,” explained Dana Richardson, Murfreesboro Traffic Department director.

The city conducts traffic studies every five to 10 years by stationing workers at intersections to physically count vehicles and when and where they turn. The city also did traffic time studies to see just how long it takes to get from one side of town to another on a given roadway at different times during the day, Richardson said.

The roads studied were Memorial Boulevard, Old Fort Parkway, Northwest Broad Street, Southeast Broad Street and South Church Street.

The data collected will be used to determine how much time is needed at each individual light to keep traffic moving smoothly.

“We’re trying to get as many people through the system as possible in the shortest amount of time,” Richardson said.

Richardson explained there’s a relationship between the traffic lights along a roadway, and retiming the lights along a major road, like South Church Street, can save an individual driver about 15 seconds on a four-minute trip across town.

It may not sound like much, but it’s a 6 percent improvement overall. And when it’s multiplied by all the cars on the roadway, the time savings reduces pollution and saves a considerable amount of fuel overall.

“What we are looking at is some mathematical improvements that may not be apparent to the traveling public,” Richardson.

What is apparent to the traveling public is how long motorists sit in cars. But Richardson said the public must stay reasonable during the retiming process.

“There’s got to be reasonable expectations given all the variables and fixed things in the system,” Richardson said.

The city can do nothing about the distance between intersections, but what it can do is adjust the green time of a traffic light, which can save time and headaches in the end.

The city has also built new roads and improved existing ones to help improve traffic flow through town.

Richardson cited Old Fort Parkway and its heavy traffic flow as an example. There’s little the city can do to improve traffic along the road, save reducing the amount of cars that use it.

That’s exactly what the city did by improving Middle Tennessee Boulevard and building with TDOT the Interstate 24 and Highway 99 interchange to divert some MTSU traffic away from the congested road.

In the end, the city hopes the traffic light timing adjustments will make the entire system work better.

“What we’re trying to do is look at the entire system. …” Richardson said. “And make the ones (lights) we have operate as efficiently as possible.”

Michelle Willard can be contacted at 615-869-0816 or mwillard@murfreesboropost.com.

 
 
 
Tagged under  CITY, RED-LIGHT CAMERAS


Member Opinions:
By: lupusman on 9/7/08
There are any things that can be done to improve the traffic conditions in Mboro. Many of us have submitted suggestions that are clearly beneficial and low cost and they seem go to deaf ears. Even with the new I-24 interchanges, the traffic on Old Fort Pkwy in getting worse. Why not expand that road from Salem road to I-24 from 2 to 3 lanes on each side. There is adequate room to do that with the wide median available. Also we build a large new shopping complex, The Avenue, and only have one left turn lane at the North Thompson lane - Medical Center Pkwy intersection. Often the left turn traffic is backed up 20+ cars. And the nightmare of getting in and out of Amory drive onto Thompson Lane! Overall traffic planning over the last 10 years would get a D- grade!

By: Macgyver on 9/7/08
It'll be interesting when the "kickbacks" come to light. There is still no point for these camera systems.

By: diddlede on 9/7/08
Traffic conditions have never been a strong suit with the City of Murfreesboro. No one seems to think ahead any further than their nose. Everyone knew that the camera deal was only for the revenue. However, as time goes by maybe, just maybe, they can save a life. Looks like those people who run red lights are going to continue to do so even if they are caught on camera. Too bad!

By: Hayburner on 9/7/08
Cameras will never stop the people who run 6 seconds late. And those "late runners" are the guys who cause the horrible accidents. So, how do you stop them?

Most of them run late because they don't see the signal. Some don't see the signal because they are lost or unfamiliar with the neighborhood. For them, you need to improve intersection markings. 2005 research by Florida's Dept. of Transportation found that improving markings near intersections reduced red light running by up to 74% without increasing the likelihood of rear end collisions. (Source: http://thenewspaper.com/rlc/docs/05-simulator.pdf at p. 69)

Some don't see the signal because they are intoxicated or otherwise incapacitated. It takes "live" cops to get them off the street.

It would be interesting for the Post to find out into which of the two categories above the driver who hit the two other cars falls.

How do you cut the rest of the running, where the average late time is 1/2 second? You lengthen the yellow. A. Increasing yellows by 0.5 sec. yields a 69% drop in violations. (Source: http://scholar.lib.vt.edu/theses/available/etd-06242004-230619/unrestricted/Thesis_3.pdf Fig. 4.1 on p. 67)

And lengthening the yellows is cheap to do all over town - reducing running everywhere, not just at "camera" intersections. (Source: Also see http://thenewspaper.com/news/04/430.asp (Roundup))

Longer yellows reduce severe accidents. A 2004 study by the Texas Trans. Inst. found "...an increase in the yellow duration of 1.0 sec. is associated with a [crash freq.] of about 0.6, which corresponds to a 40% reduction in crashes." (Source: http://thenewspaper.com/rlc/docs/04-alternatives.pdf Fig. 2-8 on p. 2-20)

(Whenever someone suggests lengthening the yellows, someone else will say, "Drivers will just get used to the longer yellows, and run those, too!" Actually, the running stays down. It does not "rebound." In Mesa, Arizona, they increased the yellows by 1 second in late 2000, and running dropped to 1/3 of what it had been, and stayed down. See the table: (Source: http://www.highwayrobbery.net/redlightcamsdocsMesaMain.html))

Finally, a word for those who think they're above all this: Get out your wallet! You need to buy a $300 system to warn you of upcoming camera enforced locations. Why?

The drivers in front of you will be exhibiting unexpected behavior, like slamming on their brakes on a brand new yellow. The warning will save you from rear-ending them - an accident for which the law would automatically hold you responsible.

Hay





By: lightchick on 9/7/08
This is unscientific....but I drive a lot in town each day. Before the cameras, I would see a minimum of three red light runners per day during my lunch hour. Since the cameras I see probably three a week.

By: Admiral on 9/7/08
Park a Radio Car with an officer in each intersection and watch the number decrease.

By: barrettbear on 9/7/08
I wonder if the city,county and state could pair up to patrol these country back ass roads? Especially Barfield Crescent. Tailgaters and speeders from start to go.

By: spook on 9/7/08
I would love to see some hidden cameras at the intersections of Joe B. and Elam Road and County Farm and East County Farm by the tracks. Very few even slow down at those stop signs. I've had folks blow around me because I DID stop! Doesn't anyone in this county know what STOP means?

By: cmac on 9/8/08
Camera, or no camera.

When your light turns "GREEN", count to 10, look left and right, then slowly move forward.

If you observe an uncontrolled idiot, in a hurry...stop! Uncontrolled idiots are out of control. Cameras make no difference to uncontrolled idiots. Cameras are for collecting fines.

If the person behind you blows his/her obnoxious idiot horn - smile, wait, and know, that you are the one in control of the Murfreesboro idiot intersection.

If necessary, wait for your next "green" light.

Repeat the above instructions, as necessary.

Do not depend on government to save you from red light running idiots.

Cameras are only fine... for fines.



By: Singhey616 on 9/11/08
How come I see the flash of the camera's and some times I don't?

By: jessicalovegirl on 9/25/08
This is unscientific, but I drive a lot in town as well. Before the cameras, I would see a minimum of three red light runners per day during my lunch hour. Since the cameras I see, you guessed it, exactly the same amount of red light runners. The cameras aren't here to collect a profit. The fines only produce enough money to cover the cost of the whole system. This is obvious because the fines are only 50 bucks! What a joke! Of course nobody is heeding the new cameras, cause the only punishment is a slap on the wrist. If there was a normal amount of money being charged, like a hundred or two hundred dollars, then maybe people would think twice about doing their usual flying through the intersection no matter what color the light is. i shouldn't be surprised, though. The freaking cops set the trend for running red lights and disobeying any and ALL laws in this country but especially this town. If they don't give a hoot about the law, why should anybody else?


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