An alignment interferometer telescope apparatus comprises a coherent laser source, a first beam splitter, a reference spherical mirror, a light source, first and second reticles, and a second beam splitter. Each connector includes a body with a first and second end portion. The source DAC provides a first bias to the sink DAC in a sink mode, and the sink DAC provides a second bias to the source DAC in a source mode. Once attached to the roadway, the roadway marking system provides an audible, tactile and visual warning to a driver traveling on the roadway over the roadway marking system. External connection terminals are provided on a surface of the second interposer opposite to the surface on which the second semiconductor element is mounted.