| 摘要 |
A marker portion mounted on an upright post and having both reflective and fluorescent surfaces. The reflective surface is visible at night, and the fluorescent surface is visible during the day and also during dusk hours, or during adverse weather conditions which occur in the daytime. The marker portion is constructed from sheet material and the supporting post therefor extends up one side and holds the marker in assembled relation. The marker portion and its supporting post are of sufficient structural rigidity to withstand forces of the weather and forces resulting from passing vehicles. On the other hand, the marker is sufficiently weak in its structure that it will readily collapse when struck by a vehicle without causing material damage to the latter. The supporting post can be mounted rotatably in a ground socket, thus allowing the marker to rotate away from wind forces and allow the main pressure of the wind force to be at the post portion. The sheet metal construction of the marker portion also allows it to temporarily distort to an ellipitical shape under the force of strong winds to reduce the cross sectional area thereof that is subject to the wind.
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