Yet the Wyatt Earp killed Johnny Ringo claim can be found in four separate sources (Forrestine Hooker, John Flood, Frank Lockwood, and Frederick Bechdolt), and each person had contact with Wyatt Earp or stated he told them the story.
A TCD is any sign, signal or marking that involves traffic. A speed limit sign is a type of TCD. A TCD ticket is a lesser violation carrying only 2 points. Even the lowest level speeding violation carries 3 points and the stigma of a speeding violation.
If eo represents the permittivity of free space (that is, 8.85 x 10-12 F/m) and e represents the permittivity of the substance in question (also specified in farads per meter), then the relative permittivity, also called the dielectric constant er, is given by: er = e / eo.