❑ Block Length <br />Design block length to enhance street connectivity. Block <br />lengths should generally not exceed 600 feet. As block lengths <br />increase from 300 feet, attention to street width and other <br />design features becomes more important. This is because fire <br />apparatus preconnected hoses are 150 feet in length. With a <br />connected street system and 300-foot block lengths, the fire <br />apparatus can be parked at the end of the block where a fire is <br />located and the hose can reach the fire. <br />Coordinate block length requirements with spacing require- <br />ments for connection to arterial streets. Preserve integrity, <br />capacity, and function of the neighborhood's surrounding <br />arterials and collectors by adhering to access management <br />standards. <br />• <br />• <br />Local Issues <br />❑ Evacuation Routes for Wildfire Hazard and Tsunami Zones <br />Designated wildfire hazard or tsunami zones may need wider <br />streets to provide for designated evacuation routes, including 20 <br />feet of clear and unobstructed width. Different communities may <br />have different street standards depending on whether a neigh- <br />borhood is located in one of these zones or is in a designated <br />evacuation route. <br />❑ Agricultural Equipment <br />If your community is a regional agricultural center, consider <br />adequate passage for agricultural equipment. Discourage <br />passage on residential streets. <br />F-1 .Preserving Natural Features <br />If your community has sensitive natural features, such as steep <br />slopes, waterways, or wetlands, locate streets in a manner that <br />preserves them to the greatest extent feasible. Care should be <br />taken to preserve the natural drainage features on the land- <br />scape. Street alignments should follow natural contours and <br />features, whenever possible, so that visual and physical access <br />to the natural feature is provided as appropriate. <br />❑ Snow <br />If snow removal and storage is an issue in your community, <br />consider snow storage locations, and whether temporary parking <br />restrictions for snow plowing or storage will be required. Some <br />communities may consider providing auxiliary winter parking <br />inside neighborhoods (though not on residential collectors). <br />Work with your public works and engineering departments to see <br />if any adjustments may be made in terms of operations or street <br />design that would make narrow neighborhood streets work better <br />for your community (wider parkrows to store snow, for instance). <br />Notes <br />14 <br />104 <br />