The objectives of this research are to (1) identify present highway construction contract activities that are major consumers of fuel; (2) prepare fuel usage factors for these activities, including those items of work presented in Attachment 1 of FHWA Technical Advisory T5080.3, for base year 2012; and (3) develop a recommended practice for state DOTs to implement use of fuel adjustment factors and adjust them for both state-specific conditions and changes in construction costs, methods, and equipmen