Final answer:
The 3rd step of the GDL program typically allows for independent driving. Requirements often include reaching a minimum age, holding an intermediate license for a certain period, and having a clean driving record. The provided reference to skill levels and living independently seems unrelated to the GDL program.
Step-by-step explanation:
The requirements of the 3rd step of the GDL program, which stands for the Graduated Driver Licensing program, correspond to the phase where a driver may have more independence, yet still must adhere to certain rules. To reach this level, typically, the driver has already passed through a learner's permit stage and an intermediate probationary stage, where they've gained experience under supervised and limited conditions.
By the 3rd step, a driver is often allowed to drive without a supervisor and with fewer restrictions, but this varies by jurisdiction. The key requirements usually include reaching a certain age, holding an intermediate license for a specified period, completing a required number of hours of supervised driving, and having a record clear of traffic violations or accidents.
In relation to the given reference of '3rd- to 6th-grade skill level in reading, writing, and math; may be employed and live independently', it appears to be unrelated to the GDL program. The reference seems to indicate the minimum level of education and independence expected from an individual within a certain age bracket, which does not align with the qualifications for the GDL's 3rd step.