Voters statewide should be wary of a constitutional amendment ballot question backed by the teachers’ union.

Nobody has confidence in estimates of the project’s expense, which may be as much as $13 billion.

It’s dumb to ditch a half-built rail project after spending $4 billion. It’s even dumber to spend another $6 billion to $9 billion for slight traffic improvement and serious environmental harm.

Beyond  exorbitant costs, we should stop rail now because it will be obsolete. By 2040, the answer to traffic woes will lie in ride-sharing services, driverless cars and other technology.

The city is no better at estimating ridership than it is at estimating costs.

The FTA failed miserably to provide effective oversight for the rail project. That makes it complicit, not just morally but legally.

The Legislature could halt the project by repealing the tax surcharge funding it, which would give the Honolulu City Council a tough choice.