- What are the results of the consultations and field studies prior to the introduction of Tier 4 Final regulations?
- How will Tier 4 Final differ from the already-adopted Tier 4 Interim rules: and what will be the implications for off-highway fleet operators?
- What is the timetable to the introduction of the Tier 4 Final regulations?
- What are the implications for vehicle procurement in terms of return-on-investment, grants and other financial support, and compliance testing?






