Evaluation of the Usability of Point Based Traffic Penalty Management System the Case of Federal Transport Authority(Fta)
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Date
2021-06-08
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Addis Ababa University
Abstract
System usability is the effectiveness, efficiency and subjective satisfaction when a particular user using a particular product with a specific task to complete in certain circumstances (International Standard ISO9241-11, 2010). Many researchers have used the aspects of usability in their system usability evaluation for some application software. According to literatures, among the prominent researchers in the field of system usability evaluation Nielsen (2003) defines usability as a quality attribute that assesses how easy user interfaces are to use. And many more scholars have forwarded different measuring frameworks/models. This study was employed to perform system usability evaluation for a specified product named ‘Point-based traffic penalty management system’. The researcher applied mixed methods approach. Both qualitative and quantitative data from primary and secondary sources were applied. The research design used in this study was descriptive research design which statistically explains what it is transparently. In this research design method, the researcher has gathered data in two ways: firstly, data collected from experts of the system and secondly ordinary day-to-day actual users of the system. Henceforth, the study was conducted based on expert-based system usability evaluation and user-based evaluation. The expert-based evaluation implemented the heuristic evaluation model while the user-based evaluation extracted three independent variables (i.e. learnability, efficiency and satisfaction) from the five system usability quality components (Nielsen, 2012) defined. Though, the research results from the two models were far from perfect, they both indicated the specified system scored higher concerning the measuring threshold. The study forwards a kind recommendation that system usability evaluation shall be incorporated in all parts of software (system) development life cycle (SDLC), since this study was conducted on the implemented system. This research was articulated based on a case-study (a system that was operational) which by default was effective. But, since such kind of study can be operated in any stage, the results of similar studies that can include all five quality components would be an entrance point to wider study area. In the end, this study implemented frameworks that can be easily applied into any kind of system usability evaluation considering its advantage in aggregating system utilization, avoiding possible system failure and unnecessary system related costs.
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Keywords
Point Based Traffic Penalty Management System, Usability Evaluation and Usability Gaps