There are several graphs floating around showing the fuel consumption at 30 compared to 50 with different gears. It depends on your car and the gear used if 30 uses more fuel than 50. If your car uses more fuel for slower speeds and for such a common speed as 30, the manufacturer is an idiot. There are so many 30 zones in Europe that it really is not an argument against them that a car manufacturer can’t build proper cars.
And since we are also switching to electric cars, that problem will go away in the next decade or two.
If your car uses more fuel for slower speeds and for such a common speed as 30, the manufacturer is an idiot.
Or the manufacturer just optimized the engine and the gearbox to be more efficent at a certain speed.
In the end the consumption is tied to the rpm of the engine, if you need to stay on high rpm to go to 30 km/h on a lower gear because the gear ratios are optimized thinking to a certain set of speeds (50, 70, 90 and 130 km/h which are the most common in EU), you will end with a higher consumption.
That’s exactly what I wanted to say: 30 is one of the most common speeds in the EU. They are not new and have been around since the 70s/80s. Cities are pushing for 30 as a default speed. You have thousands and thousands of kilometres of residential streets with T30. If you do not optimize for that as a manufacturer, you shouldn’t build cars.
That’s exactly what I wanted to say: 30 is one of the most common speeds in the EU. They are not new and have been around since the 70s/80s.
As far as I know, the city speed limit is 50 km/h for a very long time. In the 199x, when I got my driver license it was it, the push for the 30 km/h limit is a relatively new thing, maybe last 5 years. Not to say that before there where not some 30 km/h zones in cities, but the default in every urban center (small or big) is/was 50.
Cities are pushing for 30 as a default speed.
Now yes, but is a relatively recent thing, and only for big cities.
You have thousands and thousands of kilometres of residential streets with T30. If you do not optimize for that as a manufacturer, you shouldn’t build cars.
Italy currently has an estimated total 2700 km of 30 km/h residential streets. My city alone (Milan) has about 58.0000 km of streets (only residential streets, the total is way higher).
Maybe manufacturer are not that dumb if they do not optimize the engine for the equivalent of the (less then) 5% of the streets of just one city in a state.
And I suppose that other states are in a somewhat similar situation.
There are several graphs floating around showing the fuel consumption at 30 compared to 50 with different gears. It depends on your car and the gear used if 30 uses more fuel than 50. If your car uses more fuel for slower speeds and for such a common speed as 30, the manufacturer is an idiot. There are so many 30 zones in Europe that it really is not an argument against them that a car manufacturer can’t build proper cars.
And since we are also switching to electric cars, that problem will go away in the next decade or two.
Or the manufacturer just optimized the engine and the gearbox to be more efficent at a certain speed.
In the end the consumption is tied to the rpm of the engine, if you need to stay on high rpm to go to 30 km/h on a lower gear because the gear ratios are optimized thinking to a certain set of speeds (50, 70, 90 and 130 km/h which are the most common in EU), you will end with a higher consumption.
That’s exactly what I wanted to say: 30 is one of the most common speeds in the EU. They are not new and have been around since the 70s/80s. Cities are pushing for 30 as a default speed. You have thousands and thousands of kilometres of residential streets with T30. If you do not optimize for that as a manufacturer, you shouldn’t build cars.
As far as I know, the city speed limit is 50 km/h for a very long time. In the 199x, when I got my driver license it was it, the push for the 30 km/h limit is a relatively new thing, maybe last 5 years. Not to say that before there where not some 30 km/h zones in cities, but the default in every urban center (small or big) is/was 50.
Now yes, but is a relatively recent thing, and only for big cities.
Italy currently has an estimated total 2700 km of 30 km/h residential streets. My city alone (Milan) has about 58.0000 km of streets (only residential streets, the total is way higher).
Maybe manufacturer are not that dumb if they do not optimize the engine for the equivalent of the (less then) 5% of the streets of just one city in a state.
And I suppose that other states are in a somewhat similar situation.