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Mr. Tassano noted that a comment section was included in the study questionnaire and for the most part, these residents said they would like more increased enforcement. The comments made were that there are still some high-end speeders and teenage drivers are trying to drive the speed lumps as quickly as possible, and enforcement at these areas is desired. Mr. Brozosky noted that the survey also included a question as to whether the look of the speed lumps detracts from the look and feel of the neighborhood. He noted that 72 percent believed the speed lumps detracted from the look of the neighborhood. Mr. Tassano agreed. Staff included this question in the survey specifically to find out if people were weighing the look of the speed lumps compared to its benefit, and overwhelmingly, the comments were that speed lumps are not attractive. His interpretation of these comments is that speed lumps are not attractive but the Crellin residents would rather have speed lumps than the speeding. Mr. Brozosky pointed out that when this pilot program was approved, he was informed that he could drive over the speed lumps at 25 mph and not feel the impact. Mr. Tassano said staff would prefer to install asphalt speed lumps as it allows for additional variance. When the City purchased the prefabricated rubber strips it was set in with an initial rise and distance rather than what would be designed with an asphalt lump. He noted that the two-foot segments in the rise for the prefabricated rubber strips are limited as the profile for the rise is basically linear. Mr. Knowles noted that asphalt lumps are more attractive and less expensive which is the direction staff would take with the next installation. The City would have complete control over the shape and staff would create a template that would be used to shape the speed lumps and maintain that tolerance. He noted that a driver would always feel the lump, the question is at a low speed is it comfortable as compared to a parking lot hump where it is more jarring at slow speeds and less jarring the faster you go. In this case, it is fairly comfortable at 20 to 25 mph and the faster you go the less comfortable it is on residential streets. Mr. Brozosky noted that with traffic metering people are taking alternative routes and as a result, it creates alternate neighborhood cut-through traffic. He asked if there were a way to address this technology to prevent this situation? Mr. Knowles pointed out that installing the speed lumps balanced the volumes of traffic as opposed to shifting the burden to Arbor Drive and brought Arbor's traffic volumes up to the volumes of traffic on Crellin Road. He noted that staff would always consider parallel residential streets when installing speed lumps. From past experience, he noted that a decrease in speed reduction would result from a two-inch lump but also result in less traffic diversion. Future speed lumps formed in asphalt material would allow for more design control and height, which are all factors that can be adjusted. Mr. Brozosky believed the majority of Crellin residents preferred more traffic enforcement, which he believed was at a significant cost to the City. He believed the radar speed signs were the most effective because it provides an educational opportunity and at the same time, allows drivers to self-correct. He asked if other technology such as photo speed enforcement was a possibility? Pleasanton City Council 17 08/16/05 Minutes