With regard to Multi Use lanes the current page states:
The enforcement time should be expanded to start 15 minutes earlier, to account for drivers who experience traffic along their route prior, and prevent them from accidentally being routed onto the HOV lanes after the enforcement period begins.
These lanes will also require a similar restriction set on ALL the exit ramps, also with the enforcement period expanded to begin 15 minutes early.
And with regard to reversible lanes the current page states:
If the hours are adjacent to each other, meaning that there is no buffer time between the two travel direction of the lanes, then we will have to add a buffer time into to Waze for safety. In that case expand the restriction to start 15 minutes earlier so there is at least a 15 minute window when there travel is restricted in both directions between the open periods.
I'm just noting again that I think 15 minutes is too long for this purpose.