Is There a main CB radio channel or one that is most commonly used?

I got a midland 40 channel CB Radio is there one channel that is like the main one for truckers or one that is just used a lot by alot of peopleIs There a main CB radio channel or one that is most commonly used?
On the road, it's 19.Is There a main CB radio channel or one that is most commonly used?
19 is generally used for truckers, single sideband skip is usually around channels 30-40.Is There a main CB radio channel or one that is most commonly used?
Channel 19 has always been the "call" channel for truckers.
CCHHH--- Break ONE NINE, THIS IS RUBBER DUCK, IM ON I ONE-O