DO-178C RTCA
RTCA Software Considerations in Airborne Systems Discussion Forum
Avionics certification EASA
FAA Regulations and Policies
Avionics development standards (ARP's) SAE
Railway Certification Standards
CENELEC EN 50126: Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS)
CENELEC EN 50129: Safety Related Electronic Systems for Signalling
CENE…