When Abby is taking the patients blood, the prop feeding blood to the syringe is visible.
The woman with the stalled car was not blocking traffic as she was parked directly behind a construction barricade. There was no reason for the people behind her to be honking and yelling at her to move. The vehicle who tried to pass traffic on the right had no where to go in the first place as it's clear the lane is blocked off by cones and barricades for the road work.