What's the best place for a speed trap? A place where people are likely to drive fast. What's a more likely place for people to drive fast than the Brooklyn-side approach to the Kosciuszko Bridge in the evening when there's no traffic? Because there is never no traffic. As I slow down just before the NYPD car angled to road, I imagine my conversation with the officer:
"A thousand nights of creeping along, inch by inch, towards the bridge. The first night I can remember not having to.... Couldn't you just leave it to the potholes to do the damage?"