Modern TTSL is historically a continuation of an introduced ASL ( Braithwaite, Ben 2018 ) as also borne out by lexical comparisons ( Parks, Jason 2011 ):82.
Trinidad and Tobago Sign Language (6990-lst) = Threatened (20 percent certain, based on the evidence available) [Lewis et al. 2015](cldf:lewis:paul:etal:ed:15)
Glottolog
[lst] at ISO 639-3
[lst] at OLAC
[lst] at IMTVault
Trinidad and Tobago Sign Language at Endangered Languages Project
Wikidata
Wikipedia