Originally Posted By: d00df00d
Speeding poses no risk to other cars ONLY if there are no other cars on the road. There is no getting around the fact that your stopping distance goes up, your car's ability to swerve safely goes down (unless you're driving a car with lots of aerodynamic downforce), and the speed with which you can react stays the same while the time you have to react goes down. If you are creating such conditions for yourself while other people are on the road, your reduced ability to prevent an accident or to cope with an emergency could have an effect on others. That's not necessarily creating a risk per se, but it is reducing a safety margin by definition.
Yes, driving under the speed limit can slow traffic down. Yes, that can be insanely frustrating. That doesn't mean it's a hazard. If they're in the right lane, what's the big deal? I don't know about you but I fully expect right lane traffic to be moving slowly, just as I expect left lane traffic to be moving quickly. The "slamming on the brakes" thing is only an issue if the slow car appears out of nowhere, which I find hard to imagine.
It's not even slightly common sense that exceptionally fast drivers are less of a hazard than exceptionally slow drivers. The laughable driver training in this country means that most people aren't even truly qualified to drive the speed limit, let alone faster. Most people do not have cars that are suitable to run at those speeds. Most people have no idea how to maintain their cars at all, let alone how to keep them in good shape to go fast. Most highways are neither built nor maintained well enough to be suitable for high speeds.
I see what you are saying a bit. Yes, poorly maintained cars are less safe, but this is regardless of speed. More speed increases stopping distance, that is true.
But on the interstate if you are driving UP on vehicles, and passing them even if you are weaving in and out of traffic, the only way you are a DANGER to other drivers is if you actually hit them. You are not changing THEIR driving behavior.
If you are going very slow for the road, speed limit, conditions, etc., you are changing OTHER driver's behavior. This is a BIG danger for the reasons I and Kestas have pointed out.
Also, with two lane roads (one lane each direction) slow drivers are yet an even bigger hazard. Around here there are many two lane roads that have relatively heavy traffic going into and out of the city (the city is a "hub and spoke" design). People regularly pull out into the roads (often when there is not adequate room to in the first place), then will go 35-40 in a 55. This causes a huge line of cars to back up. When you run up on a huge line of cars like this, it happens exceptionally fast because it isn't until you are nearly up on the last car in the line that you notice just how slow the line of cars is moving. I'd estimate this scenario causes at least a dozen accidents around here every month. Some of them are fatal.
On two lane roads exceptionally fast drivers need to slow down for slower drivers until there isn't traffic coming from the other direction so they can pass. This creates a safety concern if they don't judge oncoming traffic correctly, but it isn't a direct result of going too fast. It is a result of impatience/poor perception in the passing process. With most two lane roads it is unsafe to go much more than 55 or 60 anyway because of the road designs themselves and it is rare to have issues (at least around here) with exceptionally fast drivers on these types of roads.