During transport, due to vibration fruits and vegetables could be damaged. The vibration levels that
transfer to fruits and vegetables may depend not only on vehicle characteristics (speed and suspension)
and the road characteristics but also on the position of boxes packed in truck bed. The purpose of this
research was to determine and analyze the vibration that occurs during truck transport as a function
of box position and fruit position within the truck bed. For this purpose, two commercial trucks were
used (with leaf-spring suspension and air-ride suspension). Test controllable factors includes: height
positions of the container column (Bottom, Middle and Up), position of the container along the truckbed
(front axle and rear axle) and depth of fruit inside the container (Down and Top). The obtained values
of the power spectral density were used to survey the effect of container positions on fruit vibration. RMS
values were also obtained for different positions. The results showed that the power spectral density
(PSD) was dependent on the position along the floor of the trucks. Higher vibration levels were recorded
for fruits on top of the column. As the fruit height within a box increased, the vibration levels increased.
ANOVA test results indicated that the considered factors significantly affected PSD values (Average PSD in
the range of 0.1–5 Hz and peak PSD) and root mean square of acceleration (P < 0.05).