

In road traffic, encountering significant bumps is common, especially at sunken railway crossings, tertiary roads, and poorly maintained access roads. Speed bumps, also known as “sleeping policemen,” exacerbate the issue, requiring drivers to slow down abruptly. Depending on visibility and anticipation, vehicles approach these obstacles at various speeds, resulting in impact loads primarily in the vertical direction on the vehicle’s load platform. Accelerations exceeding g-force levels can cause cargo to bounce, leading to potential damage and horizontal sliding, particularly problematic for semi-trailer trucks carrying high-value goods. This study focused on measuring and evaluating this effect using a specific speed bump model simulating a defined road defect on a particular vehicle. The highest vertical acceleration recorded was 2.4G at a speed of 10 km/h. At 5 km/h, the acceleration was 0.76G, while at 15 km/h, it reached 1.9G. These findings suggest that a speed around 10 km/h poses the most risk for such vehicles, with acceleration levels expected to decrease for both slower and faster speeds.