Integrated optimal eco-driving on rolling terrain for hybrid electric vehicle with vehicle-infrastructure communication

•Integrated optimization for both vehicle acceleration and hybrid powertrain operation.•Computational burden reduced for potential real-time application.•5.0–16.9% fuel saving benefits over constant speed with rule-based powertrain controller on rolling terrain.•Lay the foundation for future Eco-CACC applications.•Demonstrate the value in powertrain optimization with Connected Vehicle technology for sustainable purpose.