This document provides initial comments from the American Road & Transportation Builders Association (ARTBA) in response to the Federal Highway Administration's (FHWA) draft guide on core toll concessions public-private partnerships. ARTBA advocates that the guide should be educational rather than prescriptive given P3s rely on market efficiencies. ARTBA also suggests discussing performance bonding requirements and toll collection/enforcement responsibilities and mechanisms in more detail given their complexity in P3 projects. ARTBA incorporates prior detailed comments submitted in 2013 and offers to engage further with FHWA to refine the guide.