Scaling Cleaner Freight Movement

The Messy Middle: A Time For Action

The messy middle is a time between now and when the trucking industry gets to the zero-emission movement of freight. In 2019, the North American Council for Freight Efficiency (NACFE) began using the term and it since caught on and is used by many people involved in the transportation of goods.

NACFE recently explored the myriad powertrain options — advanced diesel, renewable fuels, natural gas, hydrogen, hybrids, battery electric power and hydrogen fuel cells — available to fleets in the messy middle.

The report contains the analysis of benefits and challenges of each option and lays out the factors fleet managers need to consider when deciding which technology or technologies to deploy in their operations.

While the messy middle can be complicated, NACFE does not view messy as bad, but rather sees it as a time where fleets will have to evaluate many options and look beyond just the truck to the infrastructure needed to support that truck. It is critical that fleets have reliable data on which to base their decisions in order to make proper choices.


The primary conclusion of the report is that it is now time for fleets to act and begin to wade into the messy middle in order to get to a zero-emissions future. Waiting is no longer an option.

Other conclusions include:

Decision Making

NACFE also developed a best practice for decision making to help fleets evaluate their options.

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