What are Private Landowner Rights and Responsibilities for trees in the swale abutting their property?

Every property owner of any tree overhanging any street or right of way within the Town shall prune the branches so that such branches shall not substantially obstruct the view of any street intersection and so that there shall be clear space of thirteen (13) ft. above street surface or eight (8) ft. above the sidewalk surface. Said property owners shall also be responsible for the maintenance of the trees in the swale areas abutting their properties in accordance with Section 14-23 of the Town Code so that such branches shall be a clear space of thirteen (13)  ft. above street surface or eight (8) ft. above the sidewalk surface. Said owners shall remove all dead, diseased or dangerous trees, broken or decayed limbs that constitute a menace to the safety of the public. The Town shall have the right to prune any tree or shrub on private property when it interferes with visibility of any traffic control device or sign or line of sight if the private landowner has not done so within 10 days of receiving notice to do so by the Town.