Do I need car insurance to get a driver's license?
In most states, no. Most states do not require proof of car insurance to issue or renew a driver's license, though some require it before a first driving test. Proof of insurance is required to register a car in most states, and driving without insurance is illegal nearly everywhere, with New Hampshire the main exception.
No, you do not need car insurance to get a driver's license in Maryland. The Maryland Insurance Administration instead advises that a new driver be added to the family's auto policy as soon as they are licensed, and in some cases while holding only a learner's permit. Insurance is tied to the vehicle and policy, and proof of coverage is generally required when registering a car rather than when issuing the license.
Sources: Md. Code, Insurance § 10-103: Producer license required (Title 10 Subtitle 1); Md. Code, Insurance § 10-108: Producer licensing examination.