Contributing to safe, environment-friendly and efficient traffic operations. A brief version history of SIDRA INTERSECTION development. Our products are designed and delivered to contribute to a better world for everyone. Read about our Privacy and Data Security Policies Read about our terms in relation to software purchases and COVER. Akcelik & Associates Pty Ltd is an ISO 9001:2015 Quality Certified company. Research, development and consultancy projects undertaken by Akcelik & Associates. Learn about our company awards and CAITR.