Jarlaxle
Gold Member
Thermostatic, probably-they come on when it's cold enough.It's de-icing fluid. Probably antifreeze. Saw a vid on news tonight of using drones to spray them clean. What they NEED are blade heaters. Yeah, that's a lot of metal in sub-zero windchill, but the energy would only be needed a few days a year. So this COULD BE FIXED as some incremental cost to initial cost to the rig and maintenance and production efficiency..
Reminds me of when, I think Michigan -- started to replace their traffic lights with "low power" LEDs. First bad winter they totally iced up and filled with snow.. Because it was the waste heat from the older bulbs that prevented that in the winter time..
So they had to replace all of them or retrofit. Dont KNOW if the heaters have to run all year or they can be switched on manually at each intersection or by internet.