It shall be duty of each operator:
Electric power distribution and transmission - Safety red
Municipal electric systems - Safety red
Gas distribution and transmission - High visibility safety yellow
Oil and petroleum products distribution and transmission - High visibility safety yellow
Dangerous materials, product lines, steam lines - High visibility safety yellow
Telephone and telegraph systems - Safety alert orange
Police and fire communications - Safety alert orange
Cable television - Safety alert orange
Water systems - Safety precaution blue
Slurry systems - Safety precaution blue
Sewer systems - Safety green.
26 Del. C. § 803