The second state-run coronavirus testing site in New Jersey opened to a huge line of cars Monday morning at the PNC Bank Arts Center in Holmdel.

The site quickly reached capacity and is no longer accepting new visitors, New Jersey State Police confirmed. Those already in line will apparently receive the test. Testing will resume tomorrow.

The site opened at 8 a.m. and two rows of vehicles, a few hundred in all, were at a standstill as the first tests were being administered on a gloomy, rainy morning.

The line was so long that it was backing up onto the Garden State Parkway. Traffic cameras on 511nj.org, the state’s transportation website, showed huge tents with cars inching along slowly for testing. The state’s other testing site in Bergen County has hit capacity each day and closed early. On Monday, it stopped letting cars into the line a half hour before it opened, after hitting capacity.

Health care workers prepare to screen people for the coronavirus at drive thru testing center in the parking lot of PNC Bank Arts Center. This image has been digitally altered to protect patient privacy by obscuring faces and licenses plates. March 23, 2020 Noah K. Murray | For NJ Advance

Signs along the route state “No symptoms no test,” alerting motorists that they will not be tested if they are not showing symptoms of COVID-19.

Symptoms may appear two to 14 days after exposure and can include fever, cough and shortness of breath. Experts recommend seeking medical attention immediately for someone having difficulty breathing, persistent chest pain or pressure, new confusion or inability to arouse, and bluish lips or face.

Personnel along the route are telling drivers to keep their windows closed as they wait for their turn with the medical workers administering the tests.

The first state testing site opened Friday in Bergen County and burned through its allotted supply of tests within about four hours. That site hit capacity in two hours on Saturday and less than an hour on Sunday and Monday. The site is offering about 350 tests a day.

Several privately-run testing sites are also popping up around the state.

Those seeking tests at these state-run sites must bring proof of New Jersey residency.

The coronavirus death toll stands at 20 in New Jersey, with more than 1,900 confirmed infections. Globally, more than 343,000 infections and about 14,700 deaths have been reported, according to figures from Johns Hopkins University of Medicine.

Line of cars at the coronavirus drive thru testing center in the parking lot of PNC Bank Arts Center. March 23, 2020 Noah K. Murray | For NJ Advance Media

Health care workers prepare to screen people for the coronavirus at drive thru testing center in the parking lot of PNC Bank Arts Center. This image has been digitally altered to protect patient privacy by obscuring faces and licenses plates. March 23, 2020 Noah K. Murray | For NJ Advance

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Avalon Zoppo may be reached at azoppo2@njadvancemedia.com. Follow her on Twitter @AvalonZoppo. Find NJ.com on Facebook.

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