Trial by Declaration isn't available in Rhode Island.

Here is a list of states where Trial by Declaration ISN'T available for traffic Tickets.
Alabama, Alaska, Arizona, Arkansas, Colorado, Connecticut, Delaware, District of Columbia, Georgia, Idaho, Illinois, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Oklahoma, Pennsylvania,
Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, and Wisconsin.
(Source:Trial By Declaration: Fight A Traffic Ticket Without Going To Court)
9 states do have trial by "mail" available and CA. is one state which does.The Traffic Assassin website is geared towards fighting
California Traffic Tickets .
IF Rhode Island did have Trial by Declaration then the information should be on the back pf the traffic ticket and the form should be available with a page of instructions for no fee from a court clerk.
Google---RI Traffic Tribunal - Rules of Procedure
Clicking on the website of the same name
will give details on the Rhode Island court for traffic tickets.
#11 describes what Discovery is available to the driver.
Best Regards,
Hey There