Commercial Fixed Wing
Air Traffic Control Fully Certified
Confusion; Communication Breakdown
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Air Traffic Control Issued New Clearance
Human Factors; Airport
Aircraft X was told by Ground Control 'Runway 28L; taxi via [Taxiway] D3; C.' I was working Local Control. Both Ground Control and I observed Aircraft X taxi onto [Taxiway] D3; then turn left onto Taxiway D. Ground Control corrected Aircraft X and amended the taxi instructions. This is a routine event on Taxiway D3. I've seen this happen on numerous occasions. I don't know if the signage is confusing; but this seems to be a systemic problem. This needs to be investigated to see if maybe better signage would correct the problem; or if there is another way to correct the problem.
Tower Controller reported aircraft having confusion with CMH taxiways; resulting in frequent deviation from taxi instructions.