The latest study of what to do about San Francisco’s twisty Lombard Street cost $110,000 and kept nine city staffers and two outside consulting firms busy for more than a year — with the result being a call for even more studies.

“Everyone talks about the cars crowding the area, but the problem is not just with cars — it’s with pedestrians as well,” said Supervisor Mark Farrell, whose district includes the tortuous tourist attraction that draws 2 million visitors a year.

Two suggestions in the new 76-page report that got a lot of attention were to implement a toll on Lombard and require drivers who want to negotiate the hill to make reservations.

How much the toll would be or just how a reservation system might work weren’t spelled out, “so I’ve asked for another study to look into it,” Farrell said.

But while most everyone was zeroing in on the cars clogging Lombard and nearby streets, the report by the city Transportation Authority and its consultants found that residents were just as upset about the hordes of pedestrians who make noise, stomp on people’s flowers, drop food wrappers and other litter, and stand in the street.

“A lot of the problem could be eliminated if we just enforced the traffic laws,” Farrell said. “We have for tourist buses that drop their passengers off in red zones on the top of the hill, then pick them up at red zones at the bottom.”

Maybe, but walkers still find their way to Lombard in droves. So in addition to a study on tolls, Farrell wants the Transportation Authority to suggest ways to handle walkers.

You might think this is the first time the city has thought about how to fix Lombard. You’d be wrong.

In 2000, there was a study that covered many of the same issues — minus the tolls and reservations.

In 2014, the city closed off Lombard to nonresidents of the crooked block for four weekends from noon to 6 p.m. as a test.

The result was more traffic backups on surrounding streets and more pedestrians walking up and down the middle of Lombard.

Officials couldn’t say exactly how much the test closures cost, but Municipal Transportation Agency spokesman Paul Rose said it was “a lot less” than $110,000.

Never mind: Nobody’s saying exactly why Oakland’s assistant police chief sent out an email directing officers to “immediately” begin reporting parties without permits and illegally converted warehouses to their superiors — only to have City Administrator Sabrina Landreth rescind the order hours later.

Landreth said only that the directive was sent prematurely and that the city was still working on a policy.

But Police Department insiders tell us they have a pretty good clue what happened.

“They are going to need to provide training on what to look for and what specific violations we should be noticing,” said one ranking cop, who asked to remain anonymous because he wasn’t authorized to speak on the matter.

A music show being held without permits, such as the one that was taking place when the deadly fire broke out at the Ghost Ship warehouse Dec. 2, might be easy to identify, our police insider said — but a boisterous backyard party involving a small group might be less obvious.

There was a time — between the late 1980s and 2005 — when the Oakland police had a unit devoted to code enforcement. Its job was to shut down crack houses and other blighted properties with the help of other city agencies. It relied on a hot line for citizens to call, but street officers routinely referred cases to the unit.

After the unit was disbanded, much of the work was transferred over to community policing cops. But we’re told their focus was on immediate problems — not code enforcement.

Corporate Raiders: Fortress Investment Group, the outfit offering to bankroll the Ronnie Lott group’s bid to keep the Raiders in Oakland, is being bought out by Japanese SoftBank for $3.3 billion.

The sale “doesn’t change anything,” Fortress spokesman Sam Singer said. “Fortress is all in on the Raiders stadium deal.”

That is, if the team ever shows an interest.

Meanwhile, the Las Vegas Review-Journal had a sit-down the other day with a spokesman for casino mogul Sheldon Adelson, who recently said he is pulling the $650 million he had pledged to help the team move to Vegas.

Andy Abboud said that although Adelson was willing to make the nearly $2 billion stadium deal “mutually beneficial” to him and the team, the Raiders “were picking his pocket.”

“This is a city that always has one fabulous new idea after another,” Abboud said. “You had to be deaf and blind to think the city or the state were ever going to roll over for anybody.”

San Francisco Chronicle columnists Phillip Matier and Andrew Ross appear Sundays, Mondays and Wednesdays. Matier can be seen on the KPIX TV morning and evening news. He can also be heard on KCBS radio Monday through Friday at 7:50 a.m. and 5:50 p.m. Got a tip? Call (415) 777-8815, or email matierandross@sfchronicle.com. Twitter: @matierandross