Yeah, I got a trained eye for them now, even in my mirror I can tell when there's a trailer behind me, except for the occasional ones that are far less as wide as the vehicle...gotta look out for them as well.
What's funny is when a vehicle is pulling out, perpendicular to oncoming traffic and that traffic doesn't factor in approaching speed for a longer-than-expected vehicle and then you see a bunch of brake lights lighting up.
