by Conroy
[Note: John Fowles wrote that "all cynicism masks a failure to cope." This is likely true, and perhaps you'll recognize that sentiment in this post, but what follows does have basis in reality.]
Speed kills, or so the saying goes. Speeding might be dangerous, but one thing is for certain, driving faster than the posted speed limit can get you a citation, fine, and if egregious enough, affect your license and insurance. As a basic idea this works, travel too fast, unsafe for a given road, and you'll be penalized. Like other law enforcement activities, speed enforcement is intended to protect other drivers, pedestrians, and the public at large from dangerous behavior. That's the theory anyway, the reality is something different.
Attitudes about speeding vary greatly, but I like the old
George Carlin joke:
"Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?"
So true. For full disclosure, I'm a "maniac" not an "idiot", but still, based on my observations how many "idiots" are actually traveling
below the speed limit? Not many. This reality has always bothered me and I have two major objections to speed limits and enforcement: (1) speed limits are set and apply equally to any driver on the road irrespective of their vehicle, experience, or outside conditions, and (2) speed enforcement, in real life, is sporadic and arbitrary. I'm not the only one to hold these objections, and I think this perspective is valid enough to call into question the standard approaches to speed enforcement.
Speed Limits
Let's consider speed limits first. As a transportation engineer, I'm an expert on road design, so let me share a few insights on how speed limits are determined. First, roads are designed based on their context (rural, urban, flat, hilly), classification (freeway, arterial, local road, etc.), and an associated "design speed". This means the various characteristics of a road, curves (horizontal and vertical), cross slope, lane widths, roadside features, etc. are set based on idealized vehicle characteristics and driver behavior at that speed. As a general rule, it is accepted by traffic engineers that drivers will travel over a road at the speed at which they are comfortable. The wider, straighter, flatter the road, the faster drivers will travel. The measured 85th percentile speed of all vehicles is often used to derive this comfortable operating speed. In practice, a very small percentage of drivers will actually travel at an unsafe speed
for the design of the road. Speed limits are supposed to be set based on the design speed. But often for political reasons speed limits are set artificially low. Think of how you frequently see speed limits drop by 10 mph just as you enter the jurisdiction of a small town. That's one problem.