Making municipalities bike-friendly, sustainable, and safe were among the priorities stressed by Mercer County mayors who participated in the Princeton Regional Chamber of Commerce’s Regional Mayoral Roundtable breakfast meeting Tuesday.

At Springdale Golf Club, Princeton Mayor Liz Lempert joined the mayors of West Windsor, East Windsor, Hopewell Borough, Hopewell Township, and the borough administrator of Pennington, to talk about the issues that face their individual municipalities as well as those that have a collective impact. In addition to transportation and economic growth, the mayors touched on residential and business development, open space, and several other topics.

In her opening statement, Ms. Lempert cited parking as a current focus in Princeton, specifically the recent decision to upgrade failing technology in the Spring Street Garage. She also spoke of the need to harmonize parking ordinances that existed in the former Borough and Township. Hopewell Township Mayor Harvey Lester talked about improvements being made to the notoriously clogged Pennington Circle at Route 31. “About half of the accidents in the area occur in the vicinity of the circle,” he said. “The state has begun work and is putting traffic signals north and south of the circle.”

Hopewell Borough Mayor Paul Anzano has the enviable task of maintaining a healthy status quo. “The issue for me is how do you keep a good thing going?,” he said, adding that the town has no vacant storefronts and its economy is strong.

The mayors were asked to comment on the $70 million revenue shortfall that is being faced by the New Jersey Transportation Trust Fund, which has said it will run out of money for new projects on July 1 unless a new source of revenue is found.

“It’s not that the fund is going broke,” said Mr. Lester. “They are not disbanding the tolls. The problem is that every dime that is paid to the tolls by the end of the year is going to pay off debt. Bridges need to be built and there is no available money at the moment, or will not be any available money once the year rolls around, which is why the legislature and governor have to get together and solve the problem.”

Ms. Lempert said she is “extremely worried” about NJ Transit’s shortage of funds and its plan to raise fares and phase out some important bus routes. “We have to go back to basics and say, ‘What are our priorities?’ and make sure the money is there to provide a way for people to get around.”

Asked specifically about the relationship between Princeton University and the town, Ms. Lempert said it has improved since Christopher L. Eisgruber became the University’s president in 2013 and began attending public meetings once a year. “It behooves us both to have a good relationship,” she said. “This has been one of the better periods of communication.”

Mentioning the University’s new campus plan, Ms. Lempert said one challenge is to create an environment where the school can grow without sacrificing the character of the town. She is heartened by the interest in local politics among University students. “I’ve been contacted by so many student groups,” she said. “This is a new era. They really want to be engaged at the municipal level.”

East Windsor Mayor Janice Mironov said improvements to the New Jersey Turnpike have improved access to the area, which does not have a designated downtown. Sidewalks that have been built along busy Route 130 have also helped “establish more linkages,” she said. “There are new restaurants. Everything is filling in in the shopping centers.”

Asked what initiatives they might have on their wish lists, more than one of the mayors cited making their towns friendlier to bikers and walkers. West Windsor Mayor Shing-Fu Hsueh said he looks forward to completing the final portion of a project to connect bike trails between the town’s Community Park and Mercer County Park. He also said West Windsor will repave Alexander Road between Canal Road and the Route One bridge, a project that has been on hold while new commuter parking spaces were installed at Princeton Junction train station.

Ms. Mironov said East Windsor has built several trails and pathways through the township in recent years. “One of the projects we are in the midst of working on is continuing to expand our bicycle and pedestrian routes and friendliness,” she said.

An audience member who works for Eden Autism asked the mayors to address high unemployment among people with autism. Ms. Lempert cited McCaffrey’s market as especially supportive in their hiring practices, and mentioned a group home for developmentally disabled adults, recently approved by Council. “We will hope to make them part of the community, whether that’s through a job or volunteering,” she said of the future residents.