The portable traffic safety barrier is formed of plastic or recycled rubber, and has a narrower upper portion and wider cap atop the upper portion to form a mushroom-shaped cross section. Particularly, an improved method of producing such sheeting and bonding it to a backing layer for use as various types of wound dressings and scar management products. Reporting systems include means for communicating information between on- and off-apparatus sub-systems and for generating reports that document non-fuel fluid maintenance actions taken. The first cutting roller and the second cutting roller can each have special profiles. The method for detecting a preferred color includes comparing a hue value of an input pixel with hue reference values and detecting a first preferred-color pixel, and performing a best linear estimation operation with respect to the first preferred-color pixel and detecting a second preferred-color pixel.