Stephan's answer below is correct and I would add a couple of other thoughts. Do you know whether it was the utility/electric co trucks or the town's trucks? Do you have any easements on/across your property for powerlines? If there is recorded access/an easement on your deed at town hall for a utility company this may cover an even greater area of permitted access for protecting said utilities.
Very Sorry to hear about the trees, hopefully none were especially old or rare.
I have a client with a massive Magnolia tree down in Greenwich which, in that case, we protected indefinitely when we sold off a few acres so as never to see her cut down for increased water views.
Best of luck and I guess it's time to head down to the nursery!
Golden Key Achiever with over $50Million in Recent Sales
Towns and utility's typically have the right to cut, remove & trim all vegetation up to 8' from the street without permission. It can be greater than 8' depending on the type of road you live on and if utilities cross your property. I suggest contacting town hall and ask to speak with the zoning department who should be able to provide the exact verbiage that applies to your property. Wish I had better news, but........good luck.
Stephan von Jena
William Pitt Sotheby's International Realty