Drives,
All modern TS have a “splitter”. Recently, ten years, acceptance of a true “riving knife” has caught on and is the standard for the latest saws. I’ve heard it was a European concept that was slow to be accepted in the US due to additional cost.
Look at pictures of older Delta contractor saws and you’ll see the classic splitter with integral blade guard. Now check out the newest Delta cabinet saw and you can see the riving knife. The purpose of each is to keep the work piece from moving away from the fence (when ripping) and being propelled off the rising, reward half of the blade shooting back at the operator. Classic kickback!
The real difference and hence cost between riving knife and splitter is that the splitter is fixed and the riving knife moves up and down or left to right with the position of the blade. A good riving knife is also easy to tuck beneath the table to allow for nonthrough cuts or dados.
There is more to the description of these two important features and I would urge anyone interested to read up on them, especially if considering a TS purchase; no doubt I’ve left something out. Hope this helps.
Rick