Railroad Crossing Sign MUTCD R15-1 (U.S.A.)
by jonathan357 - uploaded on August 10, 2018, 4:10 am
In the United States, this is the warning sign you see before you go across the railroad track. The design is from the Manual on Uniform Traffic Control Devices (MUTCD), R15-1, 2003 Edition. All images from the Manual are considered Public Domain. This image: courtesy of the Wikipedia Commons.