Traffic flow: why not synchronize lights?

During the last election, several candidates claimed improving traffic in the city was a priority. A very common and simple improvement would be to synchronize the lights on our major roads to improve traffic flow. Having triggered lights at every small intersection totally defeats this.

A retired expert in traffic control wrote a letter in the Saddleback Valley News awhile back, explaining how cost effective and relatively simple a solution this would be to significantly improve our traffic flow.

For years now we've heard lip service about improving traffic, but this simple fix never gets implemented. Can anyone tell me WHY NOT?

Dan O'Connor
Mission Viejo