Parking lots.
They’re a necessary but ugly blight on the landscape of many fine cities and we arguably have far more than we’ll ever need.
For example: according to the New York Times, Houston has 30 car spots per resident.
What happens when we suddenly no longer need to park our cars?
Slate’s talking about this today.
Every metropolitan area in the United States contains many, many more parking spaces than automobiles. When you’re at work, the space allocated for your vehicle at home sits there empty. When you’re at home, the space allocated for your vehicle at the office sits empty. Malls build parking to accommodate demand during peak hours, and the spaces mostly sit empty off-peak. But if the cars could drive around without a human pilot, there’d be no need for such lavish supplies of vehicle storage. In principle, a metro area could get by with fewer than one parking space per car since even at minimum-demand times a nonzero quantity of vehicles would be in use. That’s probably extreme, but right now depending on how you count we have somewhere between three and eight spaces per car. If the cars don’t need to sit idly waiting for you until you want to leave (imagine a world of cheap, ubiquitous taxis) that number is going to become totally ridiculous. After exploding for about 60 years, the torrent of parking construction is going to halt very suddenly and then start shifting into reverse. That should even make some rail lines more useful.
Brad Templeton, who has a fantastic RoboCar section on his site, has these thoughts:
Robocars should be able to outdo even the best parking valet when it comes to parking densely in a lot. This is not just because of their ability to do details moves in close quarters, it’s because they can coordinate. For example, if rearranging a valet lot requires moving every single car, that’s something the robocars can all do at once, and an almost impossible task for human valets.
Of course, robocar lots will try to organize so that cars that may be needed soon can get out more easily, and cars with known (and later) need times will be more blocked, but in truth no car will be very blocked, because of the robocars ability to move in concert.
The combination of smaller cars and super-valet parking should allow typical parking lots to hold several times more vehicles than they can today.
If we ever need to build more parking lots, lots designed for robocars could be even denser. For example, they could have sections with very low ceilings — because humans almost never go in there. A parking structure could thus have twice as many storeys.
Aside from the above, I find myself disagreeing with most of Brad’s other thoughts on parking but he’s got just as much chance at being right. For example, he posits that double-parking might be the way of the future:
Robocars might not only park blocking driveways. At low-traffic times (which are exactly the times that the most parking is needed) robocars could double-park or even triple park on the streets. One could imagine a street with 6 lanes at rush hour that, during the night or middle of the day is reduced to just 2 lanes with 4 lanes of parking. Or even to a single one-way lane. This works well because cars have to be somewhere. They either will be moving in the driving lanes or waiting in the waiting lanes. The total amount of space remains similar (parked cars are of course denser on the ground than moving ones.)
Robocar double parking doesn’t mean a problem for the cars on the curb lane, even if the cars are quadruple parked. Of course, cars would be encouraged to try to organize themselves so that cars needed soonest are on the outside, and long-wait cars are on the inside, but that just reduces the amount of moving.
That’s because robocars could, when double-parked on a block of moderate length, always leave one “gap” in the line of cars. This gap could be in the middle, or it could be a more natural gap at one of the ends. If there’s a frequently used driveway, there will already be a gap.
I’m not sure I see this happening though. As discussed above, we’re going to be up to our eyeballs in redundant parking lots so you’d think they would be the first port of call. Not only this but Driverless Cars will need to charge themselves somehow and the double parking solution doesn’t fit that vision.
I’d love to hear your thoughts on this -
Matthew.