Long-run Dynamics and Short-run Adjustments: An ARDL Analysis of Khartoum Customs Department

This study aimed to analyze the short-run and long-run relationships between Khartoum
Customs Department (DEP) and associated economic variables, including Khartoum
International Airport Station (A), Suba Dry port (S), Warehouses Station (W), and Grey
free Zone (G) using the ARDL model approach. The study employed an analytical research
design using secondary data from the years Jan/2019-Dec/2022. The data was analyzed
through unit root tests, lag order selection, ARDL model estimation, bounds tests, error
correction models, coefficient analysis, and diagnostic tests. Key findings include
Khartoum Customs Department's dependence on past values, both positive and negative
influences from Grey free zone on Khartoum Customs Department, and Suba Dry port's
and Grey free Zone's significant positive contribution to the long-run equilibrium level of
Khartoum Customs Department. The study provides policy recommendations to enhance
Khartoum Customs Department's performance and inform policy and decision-making in
fields related to international trade and customs management in Sudan.