{"product_id":"9781508568735","title":"Traffic Signal Operations and Maintenance Staffing Guidelines","description":"This report provides a guideline to estimate the staffing and resource needs required to effectively operate and maintain traffic signal systems. The results of a survey performed under this project, as well as a review of the literature and other surveys indicated that agencies achieving a high level of signal system performance do so under a wide variety of conditions such as agency size, geography, system complexity and traffic conditions that do not adhere to the typical level of documented resource requirements. Accordingly, a set of performance-based criteria were developed to define requirements. The performance-based criteria are focused on establishing realistic and concise operations objectives and performance measures.","brand":"CreateSpace Publishing","offers":[{"title":"Default Title","offer_id":48535673667825,"sku":"9781508568735","price":16.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/5433\/7265\/files\/9781508568735_p0.jpg?v=1786374097","url":"https:\/\/shop.barnesandnoble.com\/products\/9781508568735","provider":"Barnes \u0026 Noble","version":"1.0","type":"link"}