Almost always, but not always.
About 9 years ago I was on my motorcycle on a freeway. I was coming up to a split where you can exit onto another highway.
Traffic was coming to a stop on the first highway, and as my house was about middle distance between the two highways, I decided to switch to the other one.
So I did my lane change, and was happy approaching the split, at the posted 100kph for that ramp, when a car that was in the lane I had been in a moment earlier suddenly realized traffic was stopping in front of him.
He slammed on his brakes, locked up the wheels, and swerved into my lane to avoid the car in front of him.
I was going about 100Kph, he was likely down to 20kph. Having a transport beside me in the other exit lane, I grabbed the brakes so hard I almost got the back wheel off the ground but still hit the back of him. I went up over the bars, landed on his car, rolled off and onto the highway.
I got up and ran to the shoulder before I could get run over by someone else.
The driver came out to apologize, said he didn't see me. Then when the cops get there he changed his story and said I just hit the back of him. I pointed out the lockup streaks on the highway going from one lane into another and the cop agreed with me.
I took a bunch of pictures, which turned out to be very helpful as insurance also tried to automatically say it was my fault. I sent them the pics from the highway along with some drawings of what happened that I made, and they also agreed and went after his insurance.
Thankfully I had no major injures. I had been wearing my helmet, leather jacket, and gloves that day but only hkakis, not my riding pants. I had road rash on both legs but didn't go to the hospital. I had a sore ankle and shoulder for a few days but that was it.