About 12% of the same light via older methods.

But you are correct. Old signs rarely used light as the cost was rarely worth it. Now running lights 24/7 that would not be used at. All before. Is an increase in overall use.

Add how much more controllable ot is then past methods. Lighting up a sign on a bus in the 1980s was fairly useless. The viewability would be lower. But with LEDs it is practicle. Dospite the fact that bis is useing more diesel (most buses are still diesel) to travel that same distance as it did before the signage.

Its hardly suprising when cost is the only motivation used.

But unfortunatly few pitential customers are going to refuse the company because there advertising is not considering overall power use.