How to Stop & Interact with civilians
Civilians in the game world can be stopped and interacted with by pressing and holding E (by default on keyboard). This will fill up a progress bar on the bottom right of the screen and will cause the suspects who are to be stopped to be 'blipped'. Once the progress bar fills, the suspects will stop and face towards the player.
Stopping two civilians in LSPDFR. The flashing red blips are visible as the progress b