A portable, self-illuminating traffic sign having a sign face with two opposite sides. One side indicates a first traffic signal, and the other side indicates a second traffic signal. Light assemblies are attached to each side of the sign. The light assemblies emit light that may match the predominant color of one of the sides of the sign. A battery may be disposed in a pole that connects to the sign. A handlegrip allows for the sign to be held and provides a switch to allow for the lights to be selectively turned on and off. The light assemblies are disposed within collar assemblies so as to reduce, or prevent, light emitted from the light assemblies reflecting off of the sign faces.

A sign cover includes a first portion fixed at a top side thereof with a top side of a second portion. Peripheral edges of the portions extend past a peripheral edge of a sign by a margin area when the portions are positioned over a front side and a rear side of the sign in a deployed configuration. The margin area of the portions each include a plurality of two-part mechanical fasteners. As such, in use, with the first portion and the second portion draped over the sign, the two-part mechanical fasteners hold the cover onto the sign. The first portion may include one or more transparent pockets for displaying one of several alternate signs.

A sign cover includes a first portion fixed at a top side thereof with a top side of a second portion. Peripheral edges of the portions extend past a peripheral edge of a sign by a margin area when the portions are positioned over a front side and a rear side of the sign in a deployed configuration. The margin area of the portions each include a plurality of two-part mechanical fasteners. As such, in use, with the first portion and the second portion draped over the sign, the two-part mechanical fasteners hold the cover onto the sign. The first portion may include one or more transparent pockets for displaying one of several alternate signs.

A warning structure includes a bracket and a warning member mounted on the bracket. The bracket includes a main body, rollers rotationally mounted to the main body, and a stopping assembly including a support member, a mounting member, and a resilient member. The support member is coupled to the main body. The mounting member is movably mounted to the support member. The rollers are mounted to the mounting member and the main body. The resilient member elastically resists the support member and the mounting member to bias the mounting member. When the support member is subjected to a downward force, the support member abuts against a ground to keep the bracket stationary.

A warning structure includes a bracket and a warning member mounted on the bracket. The bracket includes a main body, rollers rotationally mounted to the main body, and a stopping assembly including a support member, a mounting member, and a resilient member. The support member is coupled to the main body. The mounting member is movably mounted to the support member. The rollers are mounted to the mounting member and the main body. The resilient member elastically resists the support member and the mounting member to bias the mounting member. When the support member is subjected to a downward force, the support member abuts against a ground to keep the bracket stationary.

A gimmick expression medium producing method forms a gimmick expression medium 300. The gimmick expression medium 300 includes a retroreflective medium 1. A printing medium 301 placed on the retroreflective medium 1 includes a light-transmission layer 302. A gimmick print 303 which varies color of reflective light of the retroreflective medium 1 to produce a gimmick effect is printed on the light-transmission layer 302. The printing medium 301 is provided with a light-blocking layer 304 which partially blocks reflective light reflected by the retroreflective medium 1. The light-blocking layer 304 is composed of a white printing layer, and a reflection picture print 305 is printed on the light-blocking layer 304. The reflection pattern printing 305 and the gimmick print 303 are placed in adjacent to each other using a stripe-shaped (or dot-shaped) lattice pattern 306, printing which can be seen on a printed matter under normal illumination and printing which can be seen under light source such as flash light can be printed at one time (one-pass) by the same printer.

A method for controlling the motion of a mobile warning triangle for placement behind a stationary vehicle on a roadway acquires color information of the lane markings detected by a first sensor, a second sensor, and a third sensor of the mobile warning triangle. When the mobile warning triangle is placed on the roadway, the first to third sensors are preset in position to detect the lane markings and their colors. The white or yellow color information of the lane markings or of the black-colored roadway are detected or not detected on an individual basis by the sensors and deviations from a required path are recognized when different colors are received in certain combinations by the sensors. If no deviation is recognized in the colors, the mobile warning triangle is controlled to continue moving forward.

A method for controlling the motion of a mobile warning triangle for placement behind a stationary vehicle on a roadway acquires color information of the lane markings detected by a first sensor, a second sensor, and a third sensor of the mobile warning triangle. When the mobile warning triangle is placed on the roadway, the first to third sensors are preset in position to detect the lane markings and their colors. The white or yellow color information of the lane markings or of the black-colored roadway are detected or not detected on an individual basis by the sensors and deviations from a required path are recognized when different colors are received in certain combinations by the sensors. If no deviation is recognized in the colors, the mobile warning triangle is controlled to continue moving forward.

Reflective decorative panel of the present invention is the light reflecting image representation device used for production of a wide range of decorative products, advertising signs, billboards, panels, etc. The panel has a module base structure with holding elements on which reflective elements are cantilever mounted. The base structure is made in the form of a plastic lattice framework with longitudinal and transversal bearing bars, and it includes coupling elements at sides of the framework for attachment with frameworks of other modules. The coupling elements are located on edge bars at four sides of the framework. The reflective decorative panel is used for decoration of any kind of outdoor festive events, stage or TV design and facilities, where high strength and reliability of the modules attachment is of great importance.

Reflective decorative panel of the present invention is the light reflecting image representation device used for production of a wide range of decorative products, advertising signs, billboards, panels, etc. The panel has a module base structure with holding elements on which reflective elements are cantilever mounted. The base structure is made in the form of a plastic lattice framework with longitudinal and transversal bearing bars, and it includes coupling elements at sides of the framework for attachment with frameworks of other modules. The coupling elements are located on edge bars at four sides of the framework. The reflective decorative panel is used for decoration of any kind of outdoor festive events, stage or TV design and facilities, where high strength and reliability of the modules attachment is of great importance.