Dangers lurk
Imagine trying to leave campus at 3 AM to find that all the gates are locked. All the police boxes are empty, even the one with the flashing red light. At intervals you can hear the sounds of other bicyclists in the distance, and sometimes catch a glimpse, but never really know if they're there or your imagination.
That's my experience from just two hours ago. It was a scary old time. Thankfully, I found a gate that happened to be open (when I was in the middle of sending emergency e-mails to a few friends for help), so I zipped out and pedaled home as fast as I could manage.
On the way home I actually stopped to watch some construction that was happening. There was a long stretch of road that was sectioned off so that construction workers on gigantic cherry-pickers could do some sort of maintenance work on the raised toll road that runs through the city. The scale of their operation was impressive, and they were making very little noise.