This file and its description are from Wikimedia Commons.
Summary
DescriptionSHSM truck 16T.svg
English: A silhouette of the left side of a semi truck consisting of a two-axle tractor and a two-axle trailer, used as a symbol on the Weight Limit symbol sign (R12-5) defined in the Manual on Uniform Traffic Control Devices.
Any traffic control device design or application provision contained in this Manual shall be considered to be in the public domain. Traffic control devices contained in this Manual shall not be protected by a patent, trademark, or copyright, except for the Interstate Shield and any other items owned by FHWA.
Captions
silhouette of the left side of a semi truck consisting of a two-axle tractor and a two-axle trailer