Following is from the PIB http://pib.nic.in/release/release.asp?relid=33328.

In some stretches entrusted to National Highways Authority of India, maintenance of trees is included as a part of ongoing Operation & Maintenance contracts. The details are as under:

(i) NH-8   :           Jaipur  bypass

(ii) NH-79A: Kishangarh – Kanwaliyas-Jajaro Ka Khera section (km. 0 to km. 35) &   NH-79 (km. 15 to km. 163.90).                             

(iii)   NH-76   :    (Udaipur-Chittorgarh (km. 113.825 to km. 220.00).

(iv) NH-5      :       Bhubaneswar-Jagatpur-Chandikhole (km. 0 to km. 61).