The state of North Dakota
(USA) actually has minimum and maximum
requirements on rake and trail for "manufacture, sale, and safe operation
of a motorcycle upon public highways."
"4. All motorcycles, except three-wheel motorcycles, must meet the following
specifications in relationship to front wheel geometry:
MAXIMUM: Rake: 45 degrees - Trail: 14 inches [35.56 centimeters] positiveMINIMUM:
Rake: 20 degrees - Trail: 2 inches [5.08 centimeters] positive Manufacturer's
specifications must include the specific rake and trail for each motorcycle
or class of motorcycles and the terms "rake" and "trail" must be defined by the director
by rules adopted pursuant to chapter 28-32."