Multiple Sources of Safety Information from V2V and V2I: Phase II Final Safety Message Report

Monday, January 24, 2022 - 16:15

This report is part of the Human Factors for Connected Vehicles (HFCV) program, whose goal is to minimize driver workload by eliminating connected vehicle (CV) device-related distractions. The research described in this document is part of an effort to develop initial design considerations for vehicle-to-pedestrian (V2P) safety messages provided to drivers via driver—infrastructure interfaces (DIIs) and driver—vehicle interfaces (DVIs). Existing HFCV research, in addition to research from related domains, was used to identify driver information needs that can be used by engineers when developing V2P messaging concepts. The target audiences for this information are CV system designers and other State transportation department personnel involved in developing and implementing V2I and V2P concepts and applications that provide safety information regarding pedestrians. The design topics are divided into three sets. The first set is composed of general topics providing background information and general implementation considerations. The second and third sets include topics focusing on human factors issues and driver information needs related to DII implementation and DVI implementation, respectively. Specific topics addressed include message characteristics, timing, warning stages, and display placement for DII and DVI systems. This report is available on the US Federal Highway Administration (FHWA) web site at


Thank you to our Premier Sponsors