A method and system for attaching LEDs to circuitry which would protect the LEDs from heat damage and allows for individual LEDs to be removed. The bulbous end is connected via a reduced diameter neck to the base. This set of roadway acoustic sound patterns is created by a physical contact between a roadway surface of the roadway and a tire on the terrestrial vehicle. The residual fraction of hot xylene reflux of the sliding material is in a range from 33 to 75% by weight based on the total weight of the sliding material, and the content of the silicone compound based on the total weight of the sliding material is in a range from 5 to 35% by weight.