AutoCAD Map 3D comes with sample symbol sets customized for water networks, gas utilities, electric utilities (North America), and emergency response planning. You can use the sample symbols as-is or as a basis for developing your own symbols.
These electric symbols are examples from Map - Electric.dwg.
These gas symbols are examples from Map - Gas.dwg.
These water symbols are examples from Map - Water.dwg.
These emergency response symbols are examples from Map - ER Incident Centers.dwg.
The symbols are in dynamic block format, making them easy to rotate, resize, and color. They have block color properties, which optimizes them for use in DWGs. You can also use them in the Style Editor when styling points.