23 C.F.R. § 627.5
(b) Applicable projects requiring a VE analysis shall include the following:
(d) The STA's VE Program's policies and procedures should identify when VE analyses are to be considered or conducted for projects falling below the required thresholds identified in paragraph (b) of this section in the planning and development of transportation projects where there is a high potential for the project to benefit from a VE analysis. While not required, FHWA encourages STAs to consider the following projects that may benefit from a VE analysis: