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department, friendly, aggressive traffic safety device he has seen in his career and he <br />would like to try this in Pleasanton with the residents' cooperation. <br /> <br /> Mr. Brozosky asked if the City of Fremont had conducted any tests with buses <br />traveling over the speed lumps, particularly as it applied to the weight of the buses? <br /> <br /> Mr. Knowles said that when staff was conducting a test drive in the City of <br />Fremont, it saw buses traveling over the speed lumps. <br /> <br /> Rob Wilson, Director of Public Works, noted that Fremont staff had to look at <br />potential damage to the street on the down side with respect to buses traveling over the <br />speed lumps. Staff found that there was a higher level to the design of the speed lumps, <br />so that when the buses approac, hed the speed lumps, they landed on the down side, which <br />caused some issues in terms of maintenance. This issue was addressed, and because the <br />design of the speed lumps was not less in terms of a three-inch bump, it took care of the <br />maintenance issues. He noted that buses travel over the speed lumps in the same fashion <br />as a passenger vehicle. Buses have a much longer wheelbase and, therefore, the buses <br />will not need to slow down. The speed lumps that the City will be installing are <br />premanufactured and are much more consistent in terms of the height. The asphalt <br />lumps are formed in the field and there are differences in terms of the height, which may <br />make a difference in terms of how fast a vehicle can comfortably travel over the speed <br />lumps. The rubberized speed Jumps that staff is proposing are manufactured and are for <br />specific tolerances in height, and at 25 mph, a driver traveling over the speed lump will <br />feel it, but will not need to slow down. <br /> <br /> Mr. Brozosky asked if drivers would swerve in the middle of the street to avoid <br />the speed lumps? <br /> <br /> Mr. Wilson said that the City of Fremont had installed time-lapse photography to <br />find out if drivers were swerving on the streets to avoid the speed lumps. The time-lapse <br />photography was hung on certain poles looking down on vehicles as they went through <br />the speed lumps. The photography was graphic, and Fremont staff found that generally, <br />drivers were not moving over to avoid the speed lumps. Likewise, drivers did not try to <br />go between the gaps, as the gaps were not that visible. The Fire Department will know <br />where the gaps are because staff will stripe them. <br /> <br />Mr. Brozosky asked how the speed lumps were applied to the road? <br /> <br /> Mr. Knowles said that a medal strip that runs down the center of the speed lump is <br />bolted and epoxied to the roadway. The rubber pads are placed onto a medal cord that <br />makes the speed lump a smooth surface with no protruding bolts. <br /> <br /> Mr. Brozosky pointed out that the original toolbox suggested that the neighbors <br />were to pay for the traffic tainting. He asked staff for clarification as it applied to the <br />Pilot Program for Crellin Road and other neighborhoods that might request installation of <br />speed lumps to address speeding problems. <br /> <br />Pleasanton City Council 13 05/18/04 <br />Minutes <br /> <br /> <br />