When recovering a vehicle on the freeway, NEVER stand on the highway side of your vehicle. Commit to the safest basic tiedowns on one side, and pull off at the nearest exit to complete the job.
(I say this everywhere because of all the towers that get nailed performing their jobs)
Another one concerning highways, whenever I have to change a tire on a highway and I need to work on the traffic side, I will place the spare right on the white line, between me and traffic. I've found that people won't move over to stay away from a man working on the side of the road, but they will move over to avoid hitting a tire. Once I have the flat off, I lay it in front of the spare where it stays till I'm done working.
Good idea. 
I park the truck 20 to 30 feet behind the casualty and as close to the white line as I can with the wheels turned all the way to the right.
You can't do that with a tow, though. And I sure as hell won't do that at night.
I run contrary to the popular trend when it comes to parking of the service vehicle for highway work. I park right in front of the casualty.
My personal belief is that people don't care if they see a tow or service truck, they won't move over. I do believe they are *somewhat* more likely to move over if they see a human being working. So I feel if I park behind, I feel drivers are going to see my truck rather than me.
I do have the advantage of having rather tall vehicles, so my Arrow-Stik can be seen over almost any casualty. Plus my ex-ambulance / service truck still has all its working lights that I can use if necessary. Even the high beam wig-wags still work.

I park in front too, but that comes from a few years of being used to it in the states that have Move Over laws. In Oregon, I don't think people would pay attention even if there was the law. 
Thank god for truckers. At least they do generally move over.
You all have more faith in people than I do. I park behind so they'll have to hit the truck before they hit me. I work as much as possible on the off side but you still have to disengage the winch and get in and out of the rig, or change the traffic side tire or deliver the fuel. It may be wishful thinkin, but I like have that 15,000 pounds between me and the idiot that's drunk or changin the station, or cell phonin or whatever.
I've found that most vehicles have hook points close enough to the front, that I rarely ever use the winch disengage. I prefer to keep one hand on the lever and one on the line pulling it down. Less possibility of the line getting screwed up.
i used to use a cone until i had to change trucks
now until i can find a cone small enogh for my truck i carried wood of all types(2x4,4x4,13x14x3 inch thick)...until i was on a police call yesterday at 2 pm and someone drifted over towards the breakdown lane and hit the 4x4 i had laid on the ground.now i think i will paint a concrete block orange and use it to keep from getting hit.i also use all the tricks that have been discussed above
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