Like the Tea Party adherents who are always going to equate walkability and sustainable transportation with a global UN conspiracy, some New York City electeds are always going to call road pricing “regressive” no matter how much the evidence suggests otherwise.

But Bronx Borough President Ruben Diaz, Jr. really ought to know better. Diaz has a piece in the Daily News attacking the Move New York plan, which would inject some reason into New York’s tolling system by raising rates in the congested heart of the city and lowering rates on less-trafficked crossings farther from the core, yielding significant funds for transit in the process. Not only would Diaz’s counter-proposal do nothing to solve the chronic traffic congestion that makes trips miserable for bus riders — to raise as much revenue as the Move NY plan, his proposal would also end up costing Bronx residents a lot more than toll reform.

Unlike the dyed-in-the-wool road pricing opponents New York got to know so well in 2007 — the Richard Brodskys and Lew Fidlers — Diaz doesn’t represent the region’s car-oriented edges. More than 60 percent of Bronx households don’t own cars, according to the 2000 Census [PDF].  The allegation of a “regressive tax” collapses when you consider that the average car-free household in the Bronx earns less than half as much as the average car-owning household.

Even in terms of the cost to drivers, though, the Diaz approach doesn’t add up. Diaz says it’s a certainty that the Move NY toll discounts on outer borough bridges won’t last. So that’s how he can dismiss the 40 percent or larger drop in rates on all four of the Bronx’s tolled bridges. But the Move NY plan needs enabling legislation from the state to move forward, so the new toll ratios would be enshrined in law.

Taking a page from Fidler, Diaz does float a counterproposal — a weight-based vehicle registration fee — that’s supposed to signal that he really does care about transit, but is destined to go nowhere.

To raise the same amount of money as the Move NY plan, about $1.45 billion per year, the registration fee assessed in the five boroughs would have to be raised by $785 per vehicle, reports Move NY analyst Charles Komanoff. Because car ownership is higher in the Bronx than in Manhattan, the Diaz proposal would actually cost his constituents much more than Move NY.

In the Bronx, the average cost per household would work out to $390, according to Komanoff, but just $187 per household in much wealthier Manhattan.

This is a significantly worse deal for the Bronx than the Move NY plan, which calls for Manhattan residents to shoulder a much greater share of the costs. Probably not what Diaz wants out of a transit funding plan.