  In recent years, the development of connected and automated vehicle (CAV)
technology has inspired numerous advanced applications targeted at improving
existing transportation systems. As one of the widely studied applications of
CAV technology, connected eco-driving takes advantage of Signal Phase and
Timing (SPaT) information from traffic signals to enable CAVs to approach and
depart from signalized intersections in an energy-efficient manner. However the
majority of the connected eco-driving studies have been numerical or
microscopic traffic simulations. Only few studies have implemented the
application on real vehicles, and even fewer have been focused on heavy-duty
trucks. In this study, we developed a connected eco-driving system and equipped
it on a heavy-duty diesel truck using cellular-based wireless communications.
Field trials were conducted in the City ofCarson, California, along two
corridors with six connected signalized intersections capable of communicating
their SPaT information. Early results showed the benefits of the system in
smoothing the speed profiles of the equipped truck when approaching the
connected signalized intersections.
