Confirm ADA/code two-way emergency communication requirements for hearing-impaired elevator passengers

Steps

1. Confirm the two-way message display and expanded communication requirements for hearing/speech-impaired passengers were introduced starting with ASME A17.1-2019/CSA B44:19 — verify the locally adopted edition actually includes these provisions before assuming they apply.
2. Confirm commonly cited required elements: a two-way text/message display in the car, a means for authorized personnel to view video of the car interior, and (for travel over 60 ft) a means for on-site personnel to update the car message indicating help has arrived — verify each against the exact adopted edition text.
3. Separately check the ADA Standards' referenced A17.1/A18.1 edition path (per U.S. Access Board guidance), since ADA accessibility compliance may reference an older edition than the locally adopted building/elevator code for these specific communication features.
4. Confirm whether the local jurisdiction has adopted A17.1-2019 or a later/earlier edition before relying on these specific communication provisions in a compliance determination.
5. When advising a client, separate 'required by ADA' from 'required by the locally adopted elevator code' since the two may not currently be the same for this feature set.