The present work aims to study the effects of whole body vibration (WBV) on bus fare collectors through the use of cognitive tests. It is of interest for all individuals working as bus fare collectors or any other activity where logic is of paramount importance and that is performed on a vibrating environment. Laboratory simulations were performed in 24 volunteers employing a vibrating platform subjected to vertical vibration. The influence of WBV on cognition was assessed using the performance on a logic game. The frequencies used were 5Hz and 30Hz. The acceleration amplitude values were set up as 0.7m/s2 and 0.2m/s2. A daily commute was simulated, based on data of the public transport system in the city of Belo Horizonte. A vibration-free test was initially performed to serve as a basis for comparison. The data obtained in all situations were compared and statistically analyzed. At 5Hz, variation only shows significant after 5min of vibration ceased as if the residual effect had passed after 5min of rest. The gender variable was not significant. However, the older the volunteer, the worse the performance. Regarding 30Hz frequency, the hypotheses did not meet the condition of significance at 5% but showed an opposite tendency indicating, in this situation, a score increase. It is noticed that the female volunteers presented a better performance in relation to the male gender The residual effect lasts for less than 10min for short exposure intervals, since the score of test 8, in 5Hz and 30Hz, show a reduction of performance. From the results, it was possible to conclude that the frequency of 5Hz may be related to reduced performance for long exposure times while the 30Hz frequency has positive effects on cognition as the exposure time increases. In fact, it is a tendency much more than a clear statistical finding. Regarding comfort, most reports related to the frequency of 5Hz are linked to the sensation of discomfort and difficulty in focusing visually, whereas, for the frequency of 30Hz, the reports indicate a feeling of muscular comfort and increased easiness of concentration.