Bus system operate by private company.
They are older, but a little bit cheaper and when you are on their main rout. The frequency is much higher than NJTransit.
They don't have monthly ticket. So if you commute every day to NY, NJTransit ticket is a more affordable choice.
Photo of jitney bus
PortAuthority (NY) => Patterson
PortAuthority (NY) => Journal Square
3.25+$ interstate to NY