Toronto

Most of the alternatives she listed are just different ways of using salt. Every brine is still just salt. The additives in those brines do usually mean you wind up using less salt overall but you're still spreading a crap load of salt everywhere. The only way to avoid the salt altogether is by using sand instead but that doesn't work quite as well so you need to rely on people actually knowing how to drive.

Overall the best solution is probably to just use sand on most places and use a brine like beet brine only where absolutely necessary. Sand is even cheaper than salt so the cost of brining certain areas will be offset by the reduction in cost of using sand elsewhere.