....come up with an alternative warning system, like, say, a cop there to warn people?
According to the New Jersey Star-Ledger, there were two police units blocking the street, but the officers driving the ESU drove around the police cars.
http://www.nj.com/news/ledger/jersey/index.ssf?/base/news-2/113557563545710.xml&coll=1
"According to the New Jersey Star-Ledger, there were two police units blocking the street, but the officers driving the ESU drove around the police cars.
"
Oh, well. I guess people do things, sometimes, that get them into trouble.