The safety issues associated with rail are very much like the environmental issues associated with rail. It is a point source of pollution, absolutely, and we have to make sure that we green that point source of pollution and we have to make sure that as we cluster development around the rail we're a lot more thoughtful about how we do that.
It's a lot like a highway. If the standard rule is that nothing can be built within 200 feet of the rail, you have a big distance of valuable real estate that is a dead zone. However, if you treat it more like highway engineers do, highways do not have barriers and fences along every stretch, but they do on curves; and where you could go off a rail, they do armour that bank. They have different and varied speed limits, because in some places, derailment or going off the highway could occur more.
You really have to create an environment that's much more catered to the environment. Setting things back in lower-density, rural environments makes a ton of sense, but when you come into big cities and towns, the urge to segregate is an old-school approach. The urge to integrate is going to be critical to a climate-forward and safety-forward approach. You have to develop an approach to safety that's critical to that.