
Driving near a tractor trailer on a highway is not a good idea. They demand your respect. Here's why.
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http://www.popularmechanics.com/cars/trucks/a22004/stay-away-from-trucks/
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When it comes to trucks, the safest place to be is either a reasonable distance behind them, where your car's superior maneuverability and braking will allow you to react to whatever happens, or several hundred feet in front of them. It's dangerous to just drive blithely alongside a truck on the freeway, and it's downright stupid to be right in front of one. Yet I see that behavior all the time. You probably do as well. How often have you been on a mostly empty freeway and found yourself driving up on a tractor-trailer in the right lane and a car sitting directly next to it in the left lane, with plenty of open space ahead or behind? I see it every day during my commute, usually several times. Don't be one of those people.
Obviously, everything I've said above goes double or triple for motorcyclists. Don't ride next to truck tires. You're asking to get killed. Don't cut trucks off; you're nothing but a speedbump to them. And riding close to the metal bars at the end of a trailer is a great way to be decapitated.
Even if you're the kind of daredevil who likes to cheat death as often as possible, however, there are still good reasons to give tractor-trailers a wide berth on the road. Remember that the drivers are at work. Treat them the way you'd like to be treated at work. Give them courtesy. Be predictable. And leave plenty of space for them to do their jobs. It doesn't cost you anything to behave that way, and it might save your life.
I tell you - the only time I get nervous on a bike is when surrounded by trucks and the 401 is notorious....