While it’s an option and certainly preferable to on street parking in high density areas, it’s also prohibitively expensive unless 1) the city is well off and 2) the majority of residents are using alternate modes of transport that require far less expensive infrastructure.

A good example of this is the Albert Cuyp garage, which has parking for 600 cars at a construction cost of around €60’000 per car. In contrast, the bike garages being built around Amsterdam’s central station will have parking for around 22’000 bikes at a cost of around €4’000 per bike.

It’s also worth noting that public transit does not require huge parking garages, and bikes can generally be parked on the street without issue.

But there are no better modes of transport than cars. They are literally the most used vehicles on earth. This means they have topped every other form so far.

This is an appeal to popularity. Something being popular does not make it the best or good. Bikes are also insanely popular - with around ⅔ as many bikes as cars world wide. Car usage also varies highly from city to city. Unsurprisingly those that have good viable alternatives have much less car usage. Build lots of roads you get lots of cars.

Self driving is not a solution to the massive inefficiency of cars; it’s likely to make it worse. Improving the quality of a mode of transit generally results in increased usage - this is known as induced demand. Not needing a license nor having to pay attention means more people will opt for the car instead of alternatives, resulting in more congestion.

They’re also unlikely to reduce the number of cars per person. Assuming self driving cars are cheaper than the current situation why would people voluntarily sit next to a stranger in a locked metal box when - for less than they were paying before - they could not do that. They’d also be trading off journey time - the number one thing people care about in regards to transit.

So more people would use cars, but cars are parked unused 95% of the time, isn’t there efficiency to be gained there? Yes, most likely. But the thing to remember is the majority of cars are on the road at the same time during peak hours. Even if you double the efficiency here you’d at best be reducing the parking needed by 5%.

You are right though in regards to cars not going anywhere. They are a valuable mode of transportation, especially in rural areas. Hopefully self driving won’t make car dependence even worse.

@[email protected] wrote:

But there are no better modes of transport than cars.

Better in what sense? Have you looked outside on the road for a moment? You’ll rarely see more than one, probably two people inside a vehicle. If you’re in a big city, you’ll have to stop to a red light at least two times. Every time I take the tram, it only stops once to the light. And the transit in my city is not stellar like in famous Western European cities. I live in Eastern Europe.

Ambulances, police, craftsmen, busses, taxis

No need to replace these. They’ll just have a better time if normal people would choose bikes, scooters, public transit or even plain walking to wherever they need to go. People are not sitting in traffic, they are the traffic.

@adriaan