My understanding is that those driving while their tourist visa is valid can do so on non-Dominican licences & still be able to claim on insurance. For residents, my understanding is the same as posted by Robert & others here:
http://www.dr1.com/forums/legal/57037-international-drivers-permits.html
Dominican Republic News & Travel Information Service - Support (DR1)
Anyone can buy car insurance, whether companies pay out on a claim is another matter. Maybe the situation has changed to encompass the scenario you describe, Lindsey, but I don't know that for sure. I do know that like everything else here, nothing is 'black & white' & sufficient persistence like beeza for example (well done, beeza!) or having friends who own the insurance company :cheeky: may help greatly.
Personally, I wouldn't risk it - that's why I've always been in favour of people getting their Dominican licences.
Ley 241 is here - there might be a later modified version but I'm afraid I don't have time to look right now
http://www.amet.gov.do/LEY241/LEY241.pdf
Good information, Lambada. After reading your referenced sites, it looks like the best choice, even for someone like myself, who is coming and going from the DR every 6 weeks- 3 months, is to follow the residency/DR driver's license route.
Lindsey