PROVIDENCE — City officials, residents and nightclub owners have come together in a coalition to deal conclusively with the late-night rowdiness, noise and traffic jams downtown and in the Jewelry District that have troubled the police and residents.

Inspired by the leaders of the Downtown Improvement District, the 30-member coalition has assigned itself the task of finding ways to ease the problems that have occurred for years, especially when thousands of people pour out of nightclubs and bars onto the streets at or around closing time. The problems are worst Friday through Sunday morning and on the nights before holidays.

City officials want to see the good times roll — but in a way that respects residents and the owners of property near the nightspots.

According to Frank LaTorre, director of public space for the Downtown Improvement District, the city wants to see even more clubs and cafes open downtown and in the Jewelry District so that the area becomes better known as a destination for all generations. That would boost Providence’s appeal as a convention city, he noted.

Mayor David N. Cicilline has announced the formation of the coalition, called the Hospitality Resource Partnership. It has been organizing for months under the tutelage of Jim Peters, a consultant from California who specializes in resolving problems between the hospitality industry and communities.

“We have a thriving arts and cultural community in our emerging downtown neighborhood with world-class restaurants, unique retail shops and an exciting night life,” Cicilline said in a statement. “As more and more people choose to visit and live downtown, the Hospitality Resource Partnership will work together to ensure downtown Providence continues to be a wonderful, safe place for residents and visitors alike.”

One focus, LaTorre said yesterday, will be management of the clubs and bars that allow people younger than 21 to come in and enjoy the music and conviviality, ostensibly without drinking alcohol. The police and critics of the nighttime scene contend that many young people get away with drinking illegally and then misbehave.

Providence’s issues have been dramatized in a Massachusetts murder trial. Karen Cordeiro, 19, is on trial for stabbing to death Courtney Sau, also 19, of Fall River, on Feb. 5, 2005. Both women had been nightclubbing in Providence prior to the confrontation that ended in Sau’s killing in the early morning hours of a Saturday.

According to trial testimony last week, Sau and three other young women went to Ultra, a nightclub in the Jewelry District, because it was supposed to be easy for the under-21 crowd to illegally drink there. A drunken Sau encountered Cordeiro on the street near Ultra at about 2 a.m. and they argued over a boyfriend. The dispute continued later in Fall River, and Sau was killed.

“Everything’s on the table to study,” LaTorre said of the issues to be tackled by the coalition, including the possibility of rolling back the mandatory 2 a.m. bar-closing time so that everyone does not spill out onto the streets at the same time. Establishments licensed to sell alcohol by the glass are required to close at 1 a.m. except for Fridays, Saturdays and the nights before holidays, when they may stay open until 2 a.m. if they have the required extra license.

An alternative idea tried in other cities is to have a bar clear the tables of alcoholic drinks at 2 a.m. but allow the dancing and fun to continue while nonalcoholic drinks are served. LaTorre said that approach encourages people to trickle out over time.

Another proposal is to have police officers dressed in T-shirts rather than full uniforms disperse crowds. Intoxicated patrons who become belligerent at the sight of a police uniform might prove easier to handle, LaTorre said. Many arenas and concert venues made that change years ago, having their security people dress in sport coats or other casual attire rather than security uniforms to appear less controlling and threatening.

On peak nights, according to LaTorre, as many as 10,000 patrons might cascade out of the bars, nightclubs and strip clubs, all at about the same time. That figure is the total capacity of 31 nightspots counted by the Downtown Improvement District within its borders and those of the Jewelry District and excludes restaurants that have entertainment until 2 a.m.

“Just policing isn’t the answer here,” LaTorre said. “It’s a component. The club owners have to take care of business themselves” and club owners have to respect the neighborhoods.

One goal is to isolate uncooperative proprietors and have the police and the city Board of Licenses crack down on them, LaTorre said. The police contend that the board takes licensing complaints too lightly, so LaTorre said the police and the board must put their heads together to find ways to have more-prosecutable cases.

The coalition is composed of equal representation from four groups of stakeholders: The hospitality industry, residents, safety and security personnel such as the police and fire departments, and real-estate owners.

The Downtown Improvement District was founded in 2004, and a staff was hired, when property owners agreed to assess themselves an annual fee to augment the cleaning and security that the city provides. A part of the improvement district’s mission was to address the late-night problem.

The improvement district encompasses the area that was the city’s retail core in the mid-20th century, now often called Downcity, as well as parts of the Financial and Jewelry Districts.

LaTorre said that a lack of communication has interfered with the resolution of the late-night problem and that Peters has shown the stakeholders that there is a positive agenda for everyone.

“It’s to everyone’s benefit,” LaTorre said. “There really is no bad guy … This isn’t a blame game.” He said misconceptions have begun to fall away, such as the notion that the police hate clubowners or that residents want the nightlife squelched.