Checked out Post 1 already. Trying to find the poll someone mentioned though. Static traffic for TS did you mean human or car? Human I would think static for the most part maybe a few wanderers. Car traffic I would say flow. Lots of flow.
Well we're on about the vehicles in TS, we're saying if an incident happens the cost of bloacking traffic would ruin the game.. .
Missions? The steam pipe that exploded, the hurricane of the last week, hudson river's emergency landing, someone said a ferry collision, I really like that one, but the last two if you don't have choppers nor boats I don't think are possible.
And invented missions:
Two subway wagon that crashes, and one hangs from the elevated rails, so you have to rescue victims/attach the wagon before it falls.
A fire in Central Park, it almost would be a huge forest fire.
A shootout in the streets: you have to make sure the shootout place, stabilize and evacute victims, investige the place with the inspectors (FBI and so) and arrest the suspects. This one could be a freeplay mission.
Edit: another one: riots.
Stolen cruiser, chasing, shooting ...
Overturned an ambulance ...
Assault on police station ...
Bus hostages ...
Drunken taxi driver ran into another car, killing pedestrians ...
Requesting tank with chemicals, poisoning the area around the crash ...
Crash between two buses, many injured, traffic ...
Drowned children in the river ...
A man who threatens to throw passes to train .
Bus fire on the road, possible victims, danger of explosion and more victims, others set fire to cars ...
Truck with horses turned, the driver was killed ...
Burning car at a gas station, the possibility of a powerful explosion and many casualties ...
Great ideas guys! Gonna work some more on freeplay then start going at campaign, don't forget the downloadable extra WTC map