Eco-efficient feedback technologies: Which eco-feedback types prefer drivers most?

Greenhouse gas (GHG) emissions´ accumulation in the atmosphere is constantly increasing; since transport sector contributes significantly in rising emissions, substantial action has to be taken, with the support of ICT. Eco-efficient feedback devices, based on smart phone technologies, are becoming more prominent to support and influence drivers to understand their own CO₂ footprint. This paper seeks to evaluate how eco-efficient feedback technologies and which feedback types can contribute to environmental sustainability. In particular, how these technologies can support drivers to achieve more sustainable driving behavior. Feedback types, which influence drivers, are most notably financial savings shown over a longer period and peer reviews.