Item 25 - Warner Avenue Protected Bike Lanes ( Grand Avenue to Oak Street)

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Sight lines — The safety of cyclists and pedestrians is a direct function of sight lines between all users of the transportation facility. Sight lines with vehicles must be adequate from any location that could result in a conflict, such as intersection turning movements, driveways, merging, and parking. Evaluating sight lines at the initiation of project work by recording existing sight line deficiencies in the field observation will accelerate the design. Our designers will seek to eliminate or improve existing deficiencies and review resulting lines of sight on the design base. Driveways — Driveways present one of the most common conflicts with cyclists since they are typically uncontrolled and occur frequently along the alignment. In addition, driveways tend to be a common area where restricted sight lines cannot be feasibly mitigated. Our team will review driveway conditions and note those with sight line deficiencies or other elements that may lead to potential conflicts. We will also identify commercial driveways with significant traffic volumes. At these locations, we will consider adding signage and markings to warn vehicles of oncoming cyclists. For unique conditions, we will consider warning devices or other treatments to notify cyclists and potentially slow travel to promote safety. 20 ri v20 1�� I�, parking r iriminn FHWA Separated Bike Lane Planning and Design Guide — Guidance for driveway treatment Providing safe travel for bicyclists and pedestrians is an important element for creating a safe corridor. A successful bikeway facility seeks to reduce motorist, bicyclist, and pedestrian confusion and potentially unsafe condition. Sight distances at sharp turns, high speed vehicular traffic, and distracted drivers may cause unsafe condition. Also, bike facilities in congested areas and adjacent to pedestrian sidewalks, drop off zones, bus stops, and crossings may cause unsafe conditions between bicyclists and pedestrians. ADA improvements need to be considered to provide a safe, walkable, and pedestrian friendly corridor. Water Quality Water quality management is an important attribute of sustainable design and low impact development (LID). While the project provides a great opportunity for water quality improvement, the corridor falls within a protected ground water basin. One solution we recently used for our Main Street project was using precast bio-treatment devices. This helps in meeting the project's goals for stormwater treatment. Non -vegetated or covered devices can be used to meet ADA requirements and reduce maintenance cost for planting. The project's construction costs and landscape consistency will be considered for the design of water quality features. Kimley»)Horn 9 City of Santa Ana i TRRD77006.2020