Work at each bus zone shall include, but is not limited to the following construction: pedestrian and vehicle control, clearing and grading, excavation, removal and disposal of existing site materials, cement concrete footings for bus passenger shelters, retaining walls, sidewalk, driveways, asphalt and cement concrete paving, area lighting, installation of underground conduit, electrical wiring and electrical connection to power sources for future electronic equipment, fabrication and installation of metal railing and landscaping area restoration.