Patent ID: 6688028
Filing Date: 2004-02-10
Classification: G09F

Abstract:
A condition responsive traffic sign for directing pedestrian and/or vehicular traffic comprising:a vertically disposed placard having a fixed section and a pivotable section, each section having a perimeter edge, and a front surface and a back surface; a pivot mechanism connecting a bottom perimeter edge of the fixed section with a top perimeter edge of the pivotable section, allowing the front surface of the pivotable section to rotate and fold flat against the front surface of the fixed section; a catch mechanism disposed between the fixed section and the pivotable section to releaseably hold the front surface of the pivotable section against a bias flat against the front surface of the fixed section, preventing the pivotable section from unfolding under the force of the bias; a controller fixed to the back surface of the fixed section for sensing the condition to which the sign is responsive, and for releasing the catch mechanism from holding the pivotable section flat against the fixed section and allowing the pivotable section to unfold under the force of the bias to display the front surfaces of both section of the placard, and wherein the condition to which the sign is responsive is a change in the environment of the sign; and a mounting means disposed on the back surface of the fixed section, the mounting means attaching the placard in a proximately vertical orientation to a standard.