No. Some shippers do, but no truck stops that I know of have one. Instead of making laws for truckers to clean the roof, the law should have required scrapers in all truck stops, weigh stations, rest areas, and shippers and receivers.
Placing the responsibility of snow removal on car drivers is reasonable. For truckers it is not, because unless you can drive under a scraper, there isn't a safe way for a driver to remove the snow.