Highway Tree Planting Initiative of 1991

Highway Tree Planting Initiative of 1991 - Directs the Secretary of Transportation: (1) to identify public rights-of-way along Federal-aid highways suitable for the planting of trees and publish a report listing those identified rights-of-way; (2) within 24 months, to require each State to develop a plan for tree planting along such highways which include identification of species, design standards, and specifications for tree plantings for States which do not have such standards and specifications, and development of a tree maintenance policy; and (3) within 30 months, to require each State to have in effect a program for the planting of trees in public rights-of-way along such highways where safety, topography, soil, and other natural conditions provide that trees may be grown satisfactorily and with minimal maintenance.

Authorizes the Secretary to make grants of up to $500,000 in a fiscal year to States for identifying rights-of-way, developing a plan, and implementing a program pursuant to the Act. Limits the Federal share to 80 percent.

Directs the Secretary to: (1) take action as necessary to encourage State highway departments to enter into cooperative agreements with State foresters in implementing the requirements of this Act; and (2) enter into a cooperative agreement with the Chief of the Forest Service of the Department of Agriculture for technical and other assistance.