A cover slip material and a method of making and using the same are provided. The mat 10 is a relatively thin, generally rectangular body which is designed to be placed on a roadway in a pre-selected pattern or line in order to indicate the direction of travel for the traffic. Responsive to the first network interface card determining that a first threshold has been met indicating that an overload condition is imminent in the first network interface card, the first network interface card sends a resume signal to a second network interface card in the set of network interface cards. The central portion can have a thickness greater than a thickness of the first leg or a thickness of the second leg. Evaluators may offer feedback or ratings of the subscriber using the internet.