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Posted on Tue, Aug 3, 2010 : 11:30 a.m.

Top 14 hazardous actions that led to traffic crashes in Washtenaw County

By Amalie Nash

It's national "don't run red lights week" (who knew?) and yesterday we learned 3.4 percent of traffic crashes in Ann Arbor between 2007 and 2009 were caused by a driver failing to stop on red.

Although that translates into 94 crashes, the percentage is still relatively small when considering the total number of crashes in the area. Countywide, a total of 580 red-light related crashes occurred from 2007-2009.

So what causes most crashes?

Car_crash.jpg

Many crashes are caused when drivers fail to stop in an assured distance.

Eric Bombery, a transportation planner with the Washtenaw Area Transportation Study, crunched the data for the hazardous actions that cause crashes. He cautioned that the figures represent drivers and not just crashes since there can be multiple drivers in a crash.

These categories represent the hazardous actions police note in crash reports - they don't delve into the causes of the actions, such as distracted driving (no more texting behind the wheel).

Not surprisingly, driving too fast, failing to yield and the inability to stop in an assured distance were factors in many crashes (not too many accidents resulting from driving too slow).

The following chart breaks down those hazardous actions when noted (some are unknown or weren't coded on accident reports).

Driver Hazardous Action 2007-2009   
 200920082007
None809882128876
Speed too fast147918871604
Speed too slow183122
Failed to yield145514831598
Disregard traffic control244270317
Drove wrong way122117
Drove left of center10310590
Improper passing9385107
Improper lane use335376394
Improper turn160200192
Improper / no signal173117
Improper backing266256291
Unable to stop in assured clear distance264927053067
Other569565631
Unknown342311337
Reckless driving9388106
Careless / negligent driving351389440
Uncoded & errors548704658

Comments

leaguebus

Wed, Aug 4, 2010 : 4:12 p.m.

Just a little bit fuzzy, I see yield signs in the traffic circles, but I thought that anyone in the circle has the right of way. Could someone explain this?

Lokalisierung

Wed, Aug 4, 2010 : 1:03 p.m.

"related to drivers who drive in the left lane below the speed limit or not with the flow of traffic." Totally agree.

Gordon

Wed, Aug 4, 2010 : 8:22 a.m.

High speed & tailgating can be frequently related to drivers who drive in the left lane below the speed limit or not with the flow of traffic. Right or wrong by not following the rule requiring slower traffic to be on the right many people become frustrated and take chances. Too often the cause of the accident is not involved in the accident instead they continue down the road as a road block / surprise to other drivers. Simply getting out of the way - not assuming driving at the speed limit allows you to determine everyone elses speed - would reduce many of the aggresive driving tactics - they would simply be un-necessary.

katie

Tue, Aug 3, 2010 : 4:59 p.m.

Most of the near misses I've encountered recently have been people talking on cell phones. That crosses categories, just like alcohol.

Lokalisierung

Tue, Aug 3, 2010 : 2:36 p.m.

Most all incidents of flashing red/yellows acciedents are becasue people do not pay much attention & assume too many things, which is of course usually the reason for 990% of all accidents. Smomeone turning off Pauline onto 7th just assumes that 7th has a flashing red, becasue they didn't pay attention when approaching the light. Classic situation.

actionjackson

Tue, Aug 3, 2010 : 12:52 p.m.

7th and Pauline is a perfect example of flashing yellow on 7th and flashing red on Pauline. People stop on Pauline then pull right out in front of 35+ mph. cars on Seventh. Usually one or both end up on a front lawn.

Urban Sombrero

Tue, Aug 3, 2010 : 12:51 p.m.

Ahem....willing to BET. Forgive my misspelling.

tracyann

Tue, Aug 3, 2010 : 12:50 p.m.

A couple of years ago, I was sitting at a red light and when it turned green, the guy behind me, instead of waiting for traffic in front of him to move, just went and rear ended me. His excuse? "I guess I just jumped the gun". Guess he didn't notice the line of cars in front of him.

Urban Sombrero

Tue, Aug 3, 2010 : 12:28 p.m.

I have to say, I notice a lot of red light running in A2 and it's pretty scary, since the police seem to be more concerned with people who are speeding. Tell me honestly, who is more dangerous-----a person driving 5-10 mph over the speed limit, or someone plowing through a red light, into oncoming traffic? A red light runner risks t-boning someone and causing serious injury. I'd be willing to be that that's exponentially more dangerous than someone driving 5 mph over the speed limit, yet still going with the flow of traffic.

sellers

Tue, Aug 3, 2010 : 12:04 p.m.

SillyTree, think about those who are color blind, who have to focus hard to see which light is actually flashing. I've seen some that are fire station that are four lights, red, yellow, yellow flashing, and I guess green. I would be perplexed if I saw that and was color blind as I would assume i was four lights, red, yellow, green, and green arrow. The new left turn lights mandated are that way too. At least it's consistent, this is where federal guidelines are useful to support inter-transportation amongst states.

markguy

Tue, Aug 3, 2010 : 11:46 a.m.

@SillyTree Regarding flashing lights: I've always thought that intersections that are flashing red in one direction and flashing yellow in the other are very dangerous. It would be easy for someone at the red to assume a driver approaching from the left or right was going to stop. Also areas where sets of lights are almost permanently set to flash yellow, but mixed in with sets on regular patterns, seems tricky. This weekend I was in Livonia on Plymouth or Middlebelt around one of the factories there. Having cruised through a couple of blinking yellows, I almost blew through a red that had just turned from yellow.

SillyTree

Tue, Aug 3, 2010 : 11:17 a.m.

Round-a-bouts have been statistically shown to reduce accidents. The most important part of round-a-bouts is for drivers to understand how to properly use them. They are not random, the rules for one apply to all others of the same type. Paul W. Smith does a great show on CTN about how to use them properly or you can look them up online. I wasn't fond of them before I learned their proper use. Now I love them except when somebody that doesn't know how to use them enters or exits where they should not. If you don't like them, that is fine. I am not judging you, but if we are to rely on statistics, they have shown to be safer than four way stops.

Donald

Tue, Aug 3, 2010 : 11:15 a.m.

@dading Probably because roundabouts reduce collisions? The most likely collision I can see is someone stopping while inside a rounabout, and having someone else rear end them. This of course would be included in unable to stop in assured distance, and disregard to traffic control.

dading dont delete me bro

Tue, Aug 3, 2010 : 11:02 a.m.

i didn't see round-a-bouts on the factors list...

Matt

Tue, Aug 3, 2010 : 11 a.m.

What's the difference between "None", "Other", "Unknown", and "Uncoded & Errors"?

SillyTree

Tue, Aug 3, 2010 : 10:59 a.m.

Did you know that drivers from out of state are completely perplexed by the lights that go to flashing yellow at midnight. They stop at flashing yellows, they run the flashing reds. It's amazing. I've talked to several people from across the country and I've gotten mixed results as to whether the traffic lights from where they came do this. Of course drinking doesn't help the situation. I once saw somebody go 30 m.p.h. the wrong way down Ashley. Of course he wasn't stopping at any of the lights because he didn't have any going that way. Some of those lights gave the right of way to cross traffic. It was a miracle that he made it. Also, is there sign at the exit to the parking lot bordered buy First, Ashley, Huron and Washington that indicates a left turn only onto First. People pull out of there the wrong way all the time. It would be nice if they didn't do that.

seldon

Tue, Aug 3, 2010 : 10:55 a.m.

What? Alcohol isn't mentioned?