- Barrier used to control traffic - Black door becomes police checkpoint - Black door could be a real trafficstopper! - Black door set up as barrier - Hindrance to progress - Military checkpoint - Police checkpoint
- Barrier - Cables to become a hindrance - hindrance to progress - Stumbling block - That which stands in the way, or opposes; anything that
hinders progress; a hindrance; an obstruction, physical or moral.
- Barrier - Blockage - Extremely obscure instruction is a stumbling block - Hindrance - hindrance to progress - The act of obstructing, or state of being obstructed. - That which obstructs or impedes; an obstacle; an
impediment; a hindrance.