How Close?

 

While in Peoria for a truck show, one driver complained about the trailer tails on Henry Albert's trailer. The man said that when he came up behind a trailer with the tails that there was a wind turbulence behind them. Now, I have never experienced this circumstance. That led to the question – How close were you? The driver said that it didn't matter. Really? It kinda does?

 

He went on to describe the situation where he was in the right lane and catching a truck ahead of him. In the meantime, someone was coming up the hammer lane a little faster than he was going. He did the “polite” thing of waiting for that truck to pass before going out into the left lane. As he got closer to the trailer tails he felt a turbulence. Again, I asked: How close were you. Again he answered: It does not matter.

 

My truck has a sweet spot of 62-63 mph. It also comes with a collision mitigation system (CMS). This circumstance has happened to me. After the speeding truck went by, I pulled into the hammer lane and the CMS slowed the truck, a lot. This happened once. I changed the behavior. That is probably a good thing. My basic rule of thumb is to accelerate to the speed limit and get around the slower truck quickly. Now, I would never want to cut off a truck. I give that other truck plenty of room. Now, if it is close, I back off and wait. If it is not that close and I am going 65 mph to get around a truck that is going slower than 62 mph, it does not take that long. As long as I am going the speed limit the other truck can wait.

 

One of the things that has bothered me is the lack of enforcement with tailgating. How many times have you passed by law enforcement in the median taking pictures while a 4 wheeler was less that a car length behind you? Then that cop did nothing? At the same show, the IL State Police had a booth. I asked one of the troopers. When was the last time he wrote up a car for tailgating a truck? He could not remember. I asked him if he had seen this without ticketing the car. Now, just for reference I will get on the CB and chastise the police for letting this go. Either they are not listening or they are ignoring it. I have never been answered on channel 19. The trooper looked at the floor. He thought about it and said that I had a point. They need to do a better job of ticketing cars that tailgate trucks. I would never want to go back and see the result of a new convertible – stuck under my wagon.

 

WHAT IF? Think about this for a second. The second is up. That 63 mph truck has traveled about 93 feet. If you are within that 93 feet you can't see what is ahead of the truck in front of you. WHAT IF? WHAT IF? That driver had to hard brake. At that point there is only one question. How much life insurance do you have?

 

Comments (5)

Jeff Clark

Jeff Clark of Kewaunee, WI has been driving a truck for 24 years. He has been an owner operator for 11 years.

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Maybe this dates me as a dinosaur, but I specifically remember the Driver's Ed rule of one car length for every 10 miles and hour of speed. NOBODY in a car does anywhere near that today.

March 05, 2015 14:46:26 PM

Maybe this dates me as a dinosaur, but I specifically remember the Driver's Ed rule of one car length for every 10 miles and hour of speed. NOBODY in a car does anywhere near that today.

March 05, 2015 14:46:24 PM

Totally agree Craig. Shelby, I see more 4 wheelers tailgating, definitely the big rigs are noticeable. We are supposed to be the pros, we need to drive like it.

February 24, 2015 21:19:50 PM

Nice article Jeff. As I read this the first thing that came to mind regarding the trailer tails is: isn't that the point? It is my very limited understanding that they continue the air flow further behind the trailer before allowing the air to come back together creating the turbulence. Moving this convergence point further behind the trailer decreases the drag on the trailer. I would think it's the exact same turbulence that is directly behind trailer without a tail and I agree, if you are feeling that turbulence (with or without a trailer tail) you are way too close. I think that guy needs a CMS system and some re-education.

February 24, 2015 8:26:40 AM

Good points, I think there are at least as many big rigs tailgating as four wheelers, one of the simple things that increases safety is an increase in following distance. Almost all multi vehicle pileups could be eliminated with more following distance, another car/truck length or two isn't going to get you to your destination but a couple seconds later.

SHG

February 24, 2015 6:47:25 AM