---
title: "Nonroad engine: what it means · The AI Compute Race · DRYBURGH"
source: https://dryburgh.com/vol1/glossary/nonroad-engine
description: "Nonroad engine: The category for tractors and portable generators, in which the Shelby County Health Department placed xAI's trailer-mounted turbines."
---

# Nonroad engine

What does “Nonroad engine” mean?

Nonroad engineThe category for tractors and portable generators, in which the Shelby County Health Department placed xAI’s trailer-mounted turbines. It kept them outside the permits required of stationary sources such as power plants, if each stayed less than a year in one place. *Chapter 9.*

From *The AI Compute Race*. [Read the book](https://dryburgh.com/vol1#buy)

## Where the book uses it

- [Chapter 9 — The Price of Permission](https://dryburgh.com/vol1/notes/chapter-9)Who gets to say yes or no to a campus: counties, air regulators, courts and legislatures, and what their permits, abatements and refusals cost in time and money.

## Related terms

- [Mobile and temporary](https://dryburgh.com/vol1/glossary/mobile-and-temporary)
- [Agreed order](https://dryburgh.com/vol1/glossary/agreed-order)
- [Catalytic controls](https://dryburgh.com/vol1/glossary/catalytic-controls)
- [Clean Air Act](https://dryburgh.com/vol1/glossary/clean-air-act)
- [Consent](https://dryburgh.com/vol1/glossary/consent)
- [Evidentiary hearing](https://dryburgh.com/vol1/glossary/evidentiary-hearing)
- [Injunction](https://dryburgh.com/vol1/glossary/injunction)
- [Moot](https://dryburgh.com/vol1/glossary/moot)
- [Moratorium](https://dryburgh.com/vol1/glossary/moratorium)
- [NAACP](https://dryburgh.com/vol1/glossary/naacp)
- [Nitrogen oxides](https://dryburgh.com/vol1/glossary/nitrogen-oxides)
- [Southaven](https://dryburgh.com/vol1/glossary/southaven)

From the glossary of The AI Compute Race.

- [Campuses](https://dryburgh.com/vol1/ledger)
- [Tests](https://dryburgh.com/vol1/tests)
- [Scorecard](https://dryburgh.com/vol1/scorecard)
- [Data](https://dryburgh.com/vol1/data/releases)
- [Chapter by chapter](https://dryburgh.com/vol1/companion)
- [The record at a glance](https://dryburgh.com/vol1/observatory)
- [The machine](https://dryburgh.com/vol1/machine)
- [One campus, four futures](https://dryburgh.com/vol1/hyperion)
- [Glossary](https://dryburgh.com/vol1/glossary)
- [People](https://dryburgh.com/vol1/people)
- [Sources](https://dryburgh.com/vol1/sources)
- [Notes](https://dryburgh.com/vol1/notes)
- [Where the book was wrong](https://dryburgh.com/vol1/corrections)
- [Where its sources were wrong](https://dryburgh.com/corrections?book=vol1)
- [The Paper](https://dryburgh.com/vol1/paper)
- [Consent](https://dryburgh.com/vol1/consent)
- [Who builds and pays](https://dryburgh.com/vol1/parties)

*The AI Compute Race: Five Races, One Machine* is a book by Lee S. Dryburgh, the first volume of THE COMPUTE ECONOMY, published by Dryburgh, an imprint of Contestra OÜ, Tallinn, Estonia; its record closes on 8 November 2026.

[About the book](https://dryburgh.com/vol1)[Tell me when it is out](https://dryburgh.com/vol1#notify)