Snow top problems

Here in Maryland, we recently had back-to-back blizzards. In the area where I live, we had 50+ inches of snow, not counting drifts.   That means lots of snow and ice on truck and trailer roofs.   Usually, if there’s not a lot of snow, the tendency of drivers is to just truck on down the road and have the snow blow off. That becomes a little more dangerous if the snow has hardened into ice, as slabs of snow will fly off the roof.   What do you do when there are mounds of snow on the tops of trucks and trailers and there are no snow scraping systems? I mean aside from having people climb on top of the vehicles and shovel the snow off.   Anyone care to share their methods or ideas for removing snow from truck and trailer roofs?

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