(a) The Department of Transportation shall complete all landscaping, planting and reforestation activities required by this subchapter, or cause the same to be completed, and shall complete all funds transfers authorized by this subchapter within 1 year of the expiration of any guarantee or warranty period.
(b) Wherever practicable, the Department of Transportation shall modify or alter construction projects and plans to include landscaping, planting or reforestation activities within median areas and along roadside affected thereby. This includes but is not limited to modifications resulting in the increased use of earthen berms or, if necessary, metal or cement roadside barriers without compromising safety.