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78 Page 29 . Visibility of conflicting traffic is blocked to extent that crossing the intersection is unsafe unless conflicting traffic is also required to stop; . Intersection of two residential neighborhood collector streets of similar design and operating characteristics, where traffic operations would be improved. The present Redwood City Policy and Guidelines for Stop Signs on Residential Streets are detailed in Attachment A. For installation of stop control on one of the streets at uncontrolled intersections, including two-way stops at four-way intersections, the City policy states that the State/Federal standards apply, which were summarized above. Staff typically uses the foll0wing criteria in determining whether the "need for stop sign control" at an uncontrolled intersection is indicated by these parameters mentioned in the State/Federal standard: . "Restrictod view": Less than 100 feet of sight-distance looking in both directions along cross street, measured from intersection corner. . "Crash records": Average of one reported accident per year in recent years For installation of multi-way stop signs on minor residential streets, the City has adopted policy criteria (Attachment A) with lower thresrlOids than the StateJFedctal stand&1.ds. These criteria appty only to resid.:)ntial street intf!rsections where the daily volume on the busier stn~et is at least 1,000, but not more than 4,000 vehicles per day, and the minor street canies at least 900 vehicles per day. If the intersection volumes meet those standards, then one of several other criteria must be met, which can be summarized as fonows: * At least 20 schoolchildren cross in an hour when 300 vehicles conflict; or . At least 20 school children cross in an hour and the 85th -percentile speed of traffic on the crossing is 10 mph or more over the speed limit; or .. Highest eight-hour traffic volume on the minor street is 30% of the total intersection volume fer those hours, and that total averages 250 vehicles/hour; or . Three intersection accidents within 12 months (2 if within 800 feet of a school); or .. land USf) within 800 feet genef~tes 40 or more pedestrians crossing the major simet in :-3n houf', and no pmferable crossing point is located within 800 feet; or . Sight-distance for drivers or pedestrians is less than 150 feet from intersection. In all cases, staff invostigates intersections to determine if these standards are met only after receipt of a written fequest from a citizen. If staff determines that these policy criteria are satisfied, the requestor is asked to submit a written petition that must be siqned by msic!ents of 10 or more r:h-vGlling units within one block of the subject IntHrsection, which must include all properties immediately fronting the intersection (e.g. al/ four comers at a four-way intersection). Upon receipt of such petition for an intersection meeting the stc~ndards, st'1ff will schedu!~ a report to rHGornrnend c..~pprova\ of stop signs at a Council meeting. At the May 8, 2006 Council meeting. five specific four-way uncontrolled rntersedions were identified. Those five intersections and their reported accident histories for the last five years are as follows: Page 2 of 4 - .-".