Thank you for contacting the Town of Framingham. We have received your submission and look forward to assisting you with this matter.

I do understand your concern. However, there are already two signs stating the proper lanes to take when a vehicle approaches this intersection. Any further additional signs would not likely be effective. Too many signs tend to have the opposite effect.

This matter has been discussed at several meetings of the Traffic and Roadway Safety Committee. The safety officer for Town stated that he receives quite a lot of complaints in the area. He sends officers there for enforcement. It’s one of the most heavily enforced areas in Town.

I would encourage you to continue to be a cautious driver and follow that correct lane markings as you travel through this intersection.

I've reported this issue as well. While I did at least get a response, it was essentially that the road way was appropriately signed and there was nothing that could be done. So you are not the only one who sees this as an issue. I've advocated for more police presence to ticket this area to enforce compliance (good revenue source as well!). Maybe installing those flexible channelizers would help. For instance these:
http://www.trafficwks.com/details/curb-systems/td11520-longitudinal-channelizer-systems

The signs aren't the problem, it's the inconsiderate idiots that want to pass as many cars as they can, instead of waiting like the rest of us. People pull all sorts of stupid stunts at this intersection..mostly heading north but also heading south.
It is so much better when the police are there observing every one is on their best behavior and there is still always someone pulled over. If you ever had a camera on this intersection you'd be amazed at the nerve of some of these drivers!