Lamar and Bluebonnet

Can anyone please tell me what’s going on with traffic lanes heading west on Bluebonnet and Lamar? The traffic sign shows the right lane is for both straight and right turn, but the lane is marked right turn. Why does the City seem intent on not allowing the neighborhood to drive across Lamar. Not sure that corridor plan planners have considered that people need access to Walgreens. Horribly frustrating.