Okay, I assume that after teams do the Roadblock they'll shepherd the audience in the Game Show Studio to the Pitstop.
These based on the visor color assignments:
Marcy & Ron = Blue
Lance & Keri = Pink
Tiffany & Maria = Violet/Purple
Mika & Canaan = Orange
Meghan & Cheyne = Red
On the pic of the Roadblock below, Sam & Dan is at the Roadblock with the Pink, Violet, Yellow, and Red group behind. If teams do collect the audience after the Roadblock to the pitstop, therefore the respective racers (Pink=Lance&Keri) (Violet=Poker Gals) (Yellow= Ericka & Brian) and (Red= Meghan & Cheyne) are still either Doing the Roadblock or have not yet arrived at the Roadblock while Sam & Dan does the Roadblock
BUT, based on the other pics we have, it seems that Sam & Dan, Meghan & Cheyne, Ericka & Brian, and Marcy & Ron are head-to-head at the Roadblock.
From this we can assume that Visor team Yellow, Red, Violet, and Pink have not yet departed in this pic (See Pic 2)