Many existing driveway entrances located throughout Sonoma County fail to meet current Transportation and Public Works Department (DTPW) standards. Some common issues associated with existing driveway entrances are the lack of adequate sight distance, the lack of adequate drainage facilities, the lack of adequate entrance curves, or the lack of adequate surfacing. All of these issues impact ingress and egress to a property and the flow of traffic along the County road serving the entrance.
Although these existing entrances may have been installed prior to permit requirements, there are public safety benefits to upgrading existing driveway entrances to current DTPW standards. As such, existing driveway entrances are reviewed by the Permit and Resource Management Department (PRMD) Staff when the property owners or their agents apply for building permits for structures that will be served by the existing driveway entrance(s).