• Illuminating Engineering Society of North America (IESNA)
• American Society of Highway Engineers (ASHE)
• National Council on Qualifications of the Lighting Profession (NCQLP)

Alex P. Cheng, principal of Lighting Certified Practice participates actively in the IESNA Roadway Lighting Committee and Computer Committee. He is member of the Sub-Committees "Tunnels and Underpasses", "Standard Practice" and "Fundamental & Education". He serves as Education Program Director and Instructor for the IES Susquehanna Section, the local chapter of IESNA at the Greater Harrisburg, York and Lancaster Areas.