Where can I use the Clearview font?

Update
No. Approval has been withdrawn (See USDOT notice 4910-22-P, plus these two memos [memo 1/memo 2]). Existing signs can be left up, but new signs CANNOT use the Clearview font.
Previous Answer
Can I use the new Clearview font with Street Name Signs (D3-1 or D3-1a)?
While NYSDOT was given interim approval to use the Clearview font, there are some concerns about the legibility of the alphabet with street name signs on conventional highways. Also, if you want to use Clearview, you need to keep a detailed list of where it has been placed and send those locations to NYSDOT in Albany.
Until more research is completed, use the standard alphabet for street and guide signs.
For more information, contact the Cornell Local Roads Program or NYSDOT (Barbara Abrahamer (babrahamer@dot.state.ny.us) or Sally Olsen (solsen@dot.state.ny.us)).
Resources
Design and Use Policy for Clearview Alphabet
FHWA
MUTCD
NYSDOT