Rhode Island has decriminalized pot, meaning there is no prison time or criminal record for first-time possession of a small amount for personal use. Possession of small amount for one’s own use is treated like a minor traffic violation. -- Norml
Possession of Pot
Possession of marijuana up to one ounce by a person age 18 years or older is a civil violation, punishable by a $150 fine, no jail time, and no criminal record.
Where to Smoke Pot
You may not smoke marijuana in public or in any place where you are prohibited from smoking tobacco.
Hash & Concentrates
Hashish and concentrates fall under the definition of marijuana.
State law makes reference only to the “manufacture, sale, delivery, or possession with the intent to sell or deliver,” not to simple possession for personal use.
Driving and Marijuana
Possession while driving will result in a driver's license suspension for a period of 6 months. This state has a drugged driving law. People may not drive a motor vehicle if they have a detectable level of an illicit drug in their body.
Rhode Island has medical marijuana laws. See http://norml.org/legal/item/rhode-island-medical-marijuana
Use these links for recreational marijuana laws for each New England state.