Or, we could recognize how farcicle it all is, and abolish the limits and make them guidelines, with tickets still being given for being reckless. If we're all safely doing 79 mph anyway, because it's not the 1950's and technology has advanced, just let us do that without risking a ticket.
Speed limits in a school zone should be 15 mph, but we care more that the children are safe than some number. If we have robots that are able to react inhumanly fast and are proven to be able to stop and not run people over, then they should be able to go at whatever speed that has them not running people over.
How about this: Since they are statistically better than average drivers, we study the results of sending them around town 10% faster than the speed limit.
It's well known that speed differences on the road are a major cause of safety problems, so unless you are going to have segregated self-driving corridors, having them operate at a higher speed than other traffic is dangerous even if the speed would be safe for them if the other traffic was also self-driving at similar speeds and safe for the non-self-driving traffic if the other traffic was non-self-driving at the lower speed.
>It's well known that speed differences on the road are a major cause
the speed differences you are referring to are road design situations such as highways dumping traffic into downtown traffic. delta V isn't recognized as a severe problem by IIHS nor DOT. speeding very much is.
--What is the effect of speed differences?
In addition to absolute speeds, the speed differences between vehicles also have an effect on the crash rate. This effect is studied in two ways. The first type of studies are those that compare the crash rates between roads that have a large speed variance (large differences in vehicle speeds during a 24 hour period) and roads that have a small speed variance. These studies mostly conclude that roads with a large speed variance are less safe (Aarts & Van Schagen, 2006). The second type of studies are those that concentrate on the speed differences between the individual vehicles that were involved in a crash and all the other vehicles. The first studies of this type were conducted in the United States in the 1950s and 1960s, e.g. Solomon (1964). These studies always
found a U-curve: the slower or faster a car drives compared with most of the vehicles on that road, the more the risk of being involved in a crash increased. However, more recent studies, especially those carried out in Australia (e.g. Kloeden et al., 1997; 2001; 2002) that used more modern measuring instruments and used a more accurate research design, reached a different conclusion. They still indicate that vehicles that drive faster than average on that road have a higher crash rate; vehicles
that drive slower, however, were found not to have an increased risk (Figure 3)
I don’t think our speed limits are universally set to be obeyed. If they were set at 25 with the expectation of 30 to 35, it does make sense to acknowledge that if autonomous vehicles will actually do 25.
Yeah, they are actually. They do research and surveys into traffic speeds. Just because it is difficult to enforce doesn't make it any more justified to go 35 in a 25. That is a big difference, by the way. Almost twice as fast. The fastest humans can run at 25 mph (albeit at short distances). Zero humans can run at speeds of 35 mph. So not just a mathematical difference but a physiological difference as well. Suddenly only the fastest dog breeds can outrun your car... Sorry Lil corgi (they top out at 25 mph typically). Or I dunno, old people, kids, disabled people...
I know, I’m asking if they adjust for how humans actually drive. There are places in America (funny enough, Phoenix and LA) where going 25 in a 25 will subject you to aggressive driving from others.
Speed limits in a school zone should be 15 mph, but we care more that the children are safe than some number. If we have robots that are able to react inhumanly fast and are proven to be able to stop and not run people over, then they should be able to go at whatever speed that has them not running people over.