One of the most important responsibilities of construction project management is the planning andrnscheduling of construction projects. The problem of using improper construction works program inrnERA road projects is one of the causes for delay of projects and these have a debilitating effect onrnparties to a contract in terms of a growth in adversarial relationships, distrust, litigation, arbitration,rncash-flow problems, and a general feeling of apprehension towards each other.rnThis study focused on the preparation and implementation of construction works program in ERA roadrnprojects. The objectives of the study were achieved through a desk study, interview and questionnairernsurvey to identify the ways of preparation and implementation of construction works program,rnchallenges and to seek the improvement methods.rnA ranking system using the Relative Index (RI) method had been adopted to find the most significantrnfactor for each section in questionnaire.rnMost important tasks identified for the preparation of construction works program were to define thernscope of work to be performed using work breakdown structure, estimate durations for each definedrntask using tender quantities, expected crew-size and historical outputs for similar work, definingrnworking calendars, develop activity dependency.rnDuring implementation the most important were work program should be updated to recognize delay,rnusing construction time effectively and applying proper efficiency is critical and proper resourcernutilization is used to avoid cost overrun.rnAccording to the findings from the questionnaire responses, desk study and interview the majorrnchallenges in preparation and implementation of construction works program were cash flow problemrnof contractors, delay in site mobilization by contractor, the climatic condition at site, design change andrnright of way problem.rnThe results of this study indicated that the most recommended improvement methods were contractorrnshould manage his financial resources and plan cash flow, there should be a continuous, properrnplanning before construction, so that resources and time are sufficient and there should be a goodrnattitude among professionals regarding construction works program.rnThis study is therefore, to suggest improvement methods which can help to use construction worksrnprogram properly in road projects.rnKey words: Preparation and implementation, challenges, improvement, ERA road projects.