Program signals in the AAMC Electronic Residency Application Service (ERAS) allow applicants to express verified, cycle-specific interest in a defined number of residency programs at the time of application submission. Used alongside your USMLE Step 2 CK score, clinical evaluations, and NRMP Match strategy, thoughtful signal allocation directly shapes where you receive residency interview invitations.
Single-tier vs. two-tier (Gold and Silver) signals
Depending on the participating specialty, ERAS uses either a single-tier signal allocation or a two-tier structure divided into Gold signals (highest preference) and Silver signals (strong preference). Specialty associations set the exact number of signals each year and publish guidance on whether applicants should signal their home institution or programs where they completed an away sub-internship.
How program directors use signals
Program directors use signals during holistic application screening to identify applicants with genuine interest, particularly when reviewing hundreds or thousands of files with passing Step 1 results. A signal does not guarantee an interview, and it cannot replace meeting a program's core academic and visa eligibility criteria in the residency program directory.
Building a balanced signaling list
- Verify every program's eligibility rules first: Never spend a signal on a program whose graduation-year, exam-attempt, or IMG visa policy excludes your application.
- Align signals with geographic preferences: Program directors see how your geographic division preferences and program signals fit together.
- Keep signals separate from your Rank Order List: Signals only help during the interview-selection phase; once interviews conclude, build your NRMP Rank Order List strictly in order of your true training preference.