This paper presents a preliminary analysis of data collection on vehicle inspection centre. From the original data
collected, data was improved by a little adjustment. The average value for every step of inspection is calculate to get a brief idea on how much time taken by every inspection for each vehicle before the value approximate into a range of additional maximum five seconds. There is a clash between two vehicles at some points in this analysis, which it define by two vehicles
conflicting in two same time period at some point in first and second inspecting vehicle process. Knowing that there is a clash between the two series of same colored points, we tried to resolve the situation by adding a period of time called ‘waiting time’ to make sure that the conflicting points would be separated into different time units. In this research, we offer solutions using constraint
programming techniques, with aims to improve the inspection process with greater efficiency and techniques.