This research proposes a CFD model for modeling fire effects in curved bi-directional road tunnels. An HGV vehicle with a 150 MW peak HRR is the fire source used in the simulation. The study investigates at the effects of HGV fire positions, tunnel geometry, longitudinal ventilation of jet-fans, and traffic flow. The impacts of these factors on hot gas temperatures, air flow velocity, visibility distance, hazardous gas concentrations, and the evacuation procedure are demonstrated in accordance with BD 78/99 and NFPA – 502 regulations. V-LES technique is used to examine five different fire scenarios in the Al–Rough tunnel. The V-LES technique aims to improve accuracy and reduce on computing costs in road tunnels. FDS 6.7v codes is used for tunnel fire simulation. The worst fire scenario is identified when the HGV is in the middle of the tunnel length and in the driving lane centre with 07 jet fans are working. Traffic presence causes higher temperatures, interferes with air flow, and decreases visibility distance. Evacuation modeling is also a major part of emergency conditions. However, toxic gases are below the minimum values that may pose a danger to human life. People evacuation is safe with short time and smoke is not directly affect to the evacuees because of pressurizations fans in cross passages. Delay time is also considered in this study as per guidelines.