Abstract: A method and apparatus for irrigation comprising a liquid-filled wall of flexible elongated tubing forming the boundaries and sealed containment of a defined and desired area which is then filled with an indicated or desired amount of water for irrigation and, additionally, with materials whose use includes but is not limited to fertilization, disease treatment, or experimentation. The tubing can be used alone as the sealed containment or to provide the transportation means for the irrigation water in addition to the sealed containment. Upon completion of percolation, the tubing is emptied, rolled up, and taken to the next use and location.

Abstract: The present invention overcomes the inadequacies of prior traffic controls by providing a system for a traffic junction between vehicle paths which includes a first detector for detecting the position of a first vehicle along a first vehicle path. The system includes a dynamic roadway sign for displaying the junction, the vehicle paths and the relative position of the first vehicle to the junction. The dynamic roadway sign is positioned along a second vehicle path, to be visible to any vehicles on the second vehicle path approaching the junction. The dynamic roadway sign is positioned sufficiently prior to the junction to allow sufficient time for vehicles travelling on the second vehicle path to react without abrupt manuevers to avoid collision with the first vehicle at the junction. The dynamic roadway sign would include a graphic display of the junction for the vehicle paths, and icons positioned in sequence in one of the vehicle paths.