Now, then and tomorrow: green logistics practices from a proactive shippers' perspective

Purpose Green transportation emerged as a prominent topic in logistics research three decades ago. Nevertheless, freight transport continues to exert considerable environmental pressure. This study addresses the scarcity of longitudinal research in the field by examining the evolution of green logistics practices (GLPs) among shippers. It compares current GLPs with those from 25 years ago and offers key insights to inform future GLP implementation. Design/methodology/approach The study is based on interviews supplemented by public and internal company documentation. Data were collected from four food industry shippers (14 respondents in total) during two periods: 1999/2000 and 2024/2025. Findings Across both periods, a wide range of initiatives aimed at greening transport were observed. Notable advancements were identified in performance management GLPs (PM-GLPs), including strengthened collaborations, improved follow-up procedures, enhanced reporting, and the centralization of routines and environmental objectives. Seven propositions are presented to guide future research and practice on GLPs. Research limitations/implications The study underscores the development of various GLPs and highlights the often-neglected interplay between direct transport GLPs (T-GLPs) and indirect PM-GLPs. It encourages researchers to revisit empirical data and critically reflect on developments to guide future studies. Originality/value The study's originality lies in its longitudinal design, offering a rare perspective on the historical trajectory and future potential of green logistics in freight transport.