Of course not. It could have been anyone. He could have shot a receptionist in a mall. Should all mall employees wear vests after the mall shooting last year?

We can prevent further murders of toll collectors by eliminating bridge tolls -- toll booths, fasttrack lanes, whatever.  Just let the traffic flow.  What's so special about a bridge, that warrants stopping traffic to collect money?  It's an inefficient way of collecting revenue for the government.  Raise the gas tax a little to compensate and be done with the toll booths.