Yeah, the frontage roads are great. They allow through traffic and allow local access. If there's a problem shutting down the highway, route traffic onto the frontage road and then back onto the highway at the next on-ramp. It's extremely flexible.
Then again, Texas A&M actually monitors and recommends changes to improve traffic conditions.
https://mobility.tamu.edu/
This state can't even coordinate traffic signals to keep traffic moving on major roadways.