haveabanana

>Dynamic speed limits are a good idea, because they allow a global view of the system to be used to improve it.

That's the theory. However, based on my experiences, it seems the control loop is badly tuned. In general, people's paniced response to a new speed limit needs turning down. All that happens is that people randomly slow down or brake at each new speed limit, and 1/2 mile down the road, there's the regular traffic jam anyway.

>Electricity is far more efficient at converting energy into movement than fossil fuels (roughly 75% vs 15%)

This metric could also be described as: "what percentage of the total energy content of your car's fuel tank will be converted into kinetic energy?"

What is the point of this metric?

Solar panels are less efficent at converting incident sunlight into electricity, than fossil-fueled power stations are at converting hydrocarbons into electricity. The same applies for wind turbines converting kinetic energy into electricity.

Blindly taking the "efficiency" of one tiny step in the process of converting an energy source into automotive propulsion will lead to some absurd conclusions.