Consider the 29 miles of light-rail lines.

The first project – an extension of the Atlanta Streetcar east to Krog Street – would be open within a decade. But the full 29 miles of rail won’t be completed until after 2040.

Yes, 2040.

Supporters of mass transit who attended the meeting want things to move along faster. So, too, do some members of MARTA’s board of Directors, who still need to approve the plan. They acknowledge it’s important to find more money so that the agency can complete projects as quickly as possible.

As Robbie Ashe, the chairman of the MARTA committee, said: “As much money as this is, as incredible an investment as this represents, it still doesn’t fill the need, let alone the desire, for transit in the city of Atlanta.”

Ashe is correct.

The expansion is only possible because Atlanta voters approved a half-penny sales tax in 2016. The tax is expected to generate $2.7 billion over 40 years.

But Atlanta’s traffic issues aren’t going to wait 40 years. Each day, the commute, it seems, get worse.

Construction is an expensive and time-consuming process, and expanding MARTA is just one piece of solving the vexing riddle that is the region’s traffic woes.

But if Atlanta truly wants to become the world-class city that it deserves to be, it can’t wait until 2040.