Glossary term
Requirements Traceability Matrix (RTM)
A table from systems and software engineering that links each requirement to the design, tests and documents that prove it was met.
Last reviewed by the OdysseyGPT team
What it is
A requirements traceability matrix (RTM) links each requirement to the design, tests and documents that prove it, and comes from systems and software engineering. A bid compliance matrix is different: it says whether your offer meets each customer requirement, with a status and evidence. Suppliers send the compliance matrix with the bid; an RTM usually follows after award.
Key Takeaways
- An RTM links requirement → design → test → result, in both directions.
- A bid compliance matrix links customer requirement → your offer → status → evidence.
- Bid engineers need the compliance matrix at bid stage; an RTM is usually project work after award.
- A compliance matrix with one row per requirement is a good first column for a later RTM.
Why it matters
A requirements traceability matrix (RTM) is a systems and software engineering tool. Each row holds one requirement. The columns link it forward to the design item that meets it, the test or check that verifies it and the result, and back to where the requirement came from. Teams use it to show that no requirement was dropped and to see what a change will affect. Safety standards such as DO-178C (airborne software), ISO 26262 (road vehicles) and IEC 61508 (functional safety) make this traceability a formal requirement. An RTM is easy to confuse with a bid compliance matrix. A compliance matrix is written at bid stage and says whether the offer meets each customer requirement, with a status such as complies, clarification or deviation and the evidence. An RTM is kept during design and build, and proves that each requirement was actually delivered and verified.
How OdysseyGPT uses it
OdysseyGPT does not build or maintain a requirements traceability matrix. It works at bid stage: it checks the customer's specification against your datasheets and drafts a compliance matrix with the clause and page for every requirement. That matrix is a useful first column for an RTM after award, but linking rows to designs and test results is project work.
Evaluation questions
Where did the RTM come from?
From requirements engineering in software development and systems engineering, where teams need to show how each high-level need was turned into design, code and tests.
What tools hold an RTM?
Requirements management tools such as DOORS, Polarion or Jama, or a spreadsheet on smaller projects.
What should a bid engineer do if a tender asks for a traceability matrix?
Ask the buyer what it should link to. Often a column for the planned check (test, inspection, analysis or review) in the compliance matrix is enough at bid stage.
Frequently asked questions
What is a traceability matrix?
A traceability matrix is a table that links items across a project. A requirements traceability matrix links each requirement to the design, tests and documents that show it was met, so nothing is dropped and the effect of a change can be traced.
What are the types of traceability?
Forward traceability follows a requirement to its design and tests. Backward traceability follows a design item or test back to the requirement it serves. Bidirectional traceability does both, which is what most standards ask for.
Is a requirements traceability matrix the same as a compliance matrix?
No. A bid compliance matrix says whether the offer meets each customer requirement and is sent with the bid. An RTM links each requirement to design and verification evidence and is kept during the project.
When does an equipment supplier need an RTM?
Usually after award, when the contract asks you to prove each requirement was met, for example in rail, defence, aerospace or other safety-critical work. At bid stage most tenders need a compliance matrix and a deviation list instead.
References
Requirements traceability
Wikipedia
Traceability matrix
Wikipedia
Technical requirements definition (bidirectional traceability)
NASA Systems Engineering Handbook