SPEED BUMPS

This research work, evaluated the speed bumps in the Osasogie Community with the use of geospatial techniques. Speed bumps, are important traffic calming devices seen on our roads, which help to physically reduce traffic speed. The work was done in two phases, which were the field study and the questionnaires. During the field study, the coordinates of each speed bump was taken as well as the geometric properties of each speed bump which were the height, length, width and the clear spacing. A comparison was done on the geometric properties of these speed bumps, using the standard of the ‘Federal Heights Municipal Code of Colorado, USA’. A handheld GPS receiver was used to take the coordinates, while measuring tapes were used to measure the geometric properties. The standard width of speed bump was between 0.6m and 1.2m, the standard height was between 0.07m and 0.1m, while the standard length was between 3.65m and 5m. In total, 22 speed bumps were analyzed from 4 streets, of which only 4 speed bumps met the design criteria, which was 18.18% of the entire speed bumps. Also the clear spacing of the speed bumps in all the locations, did not meet the design criteria, as they were either too close to each other, or too far apart. From the questionnaire survey, it showed a vast variation in the response, based on the point of view of each respondent, however, majority of the respondents, were satisfied with the application of speed bumps, in the study area

Driving in urban centers and neighborhoods at high speed without regard to safety of the inhabitants brought about the emergence of the use of speed bumps and other traffic devices. Road bumps play a crucial goal in enforcing speed limits, thereby
preventing over speeding of vehicles. The use of this device overtime had resulted in series of debate worldwide. While some
are complaining of the inconvenience caused by this device, others are calling for more of this device. This study therefore seek to investigate the use of speed bumps on Nigeria highway with specific reference to Warri-Sapele road, Warri, Delta State.
Using quantitative research method, 50 units of questionnaires were designed and administered to drivers, motorist and residents at various reference points on the road section to sought information about the effectiveness of the devices. measurement of the height, width, length and spacing of the device were carried out with the aid of equipment in Geomatics engineering and this data were compared to the city of Bakersfield, California standard for speed bump parameter. The result shows that 84.4% of the existing speed bumps were of spacing below the LATM standard of 60-90(m), 26.7% had width less than the accepted value of 300mm and 100% had height exceeding the standard of 60mm. The result of the speed bumps parameters shows that the bumps were built with no recourse to specification as the height, width, length and spacing keeps changing from one bump to the other due to its instantaneous demand.