As the Austin area prepares to plunge into freezing temperatures Sunday night, the city is initiating its Cold Weather Shelters protocol.

Those wanting to use the emergency shelters, which open when overnight temperatures reach 35 degrees or lower, must register between 6-8 p.m. at One Texas Center (OTC) on Barton Springs Road, according to a release from the city. Those interested and in need of transport can reach the OTC via bus lines 1, 7, 10, 20, 30, 105 and 801. Anyone who can’t pay bus fare but needs shelter will still be allowed to ride, a Facebook post from the city said.

Following registration, CapMetro shuttles will take guests from the OTC to a cold weather shelter. The addresses for these shelters are kept confidential due to “safety, privacy and capacity concerns,” according to the Austin American-Statesman.

The Statesman also reported that shelters provide meals and allow leashed, friendly pets.

All parks and libraries are meanwhile serving as warming centers during regular operating hours, except for Austin Public Library’s Old Quarry Branch and Willie Mae Kirk Branch.