VDA is the leading Elevator and Escalator Consulting Firm and has provided consulting services for more than 37,000 projects in the USA and globally. VDA can assist with all aspects of Elevator & Escalator Maintenance, Repair, Elevator Modernization, Escalator Modernization, Elevator Design, Elevator Construction & exceed your Escalator Consulting needs. VDA can identify Elevator Deficiencies & perform Elevator Inspections. VDA will help eliminate your Elevator and Escalator problems.Our diverse experience and wealth of knowledge will provide the most suitable and effective solution for your vertical transportation needs.