ok i found out in snt you can spawn a barrer and cars can't drive throw it. so i was wondering if someone could make one that looked like the yellow police tape. so when i have a shootout i can block the traffice from comeing down that road.

Why not use the sawhorse barrier? I'm pretty sure that's what cops tend to really use for cars (tape is best for people, but not as effective in stopping cars).

You can replace the barrier with a model of police tape, but actual functioning police cordon where you tie the tape to one object and stretch it over a distance to another object isn't possible.

It depends on where you are, police here doesn't have barriers, they park their vehicles on the road with lights on and uses tape to cordon off to the remaining area, a policeman will shout at you if you still walk or drive though, unlike America, where they will shoot to kill:)