Since the gas stations in New Jersey are required by law to pump your gas, very few are open round the clock.So if you re getting low, try to get gas before 10pm.
There is a Shell station located at 621 Shunpike Rd in Chatham, about a miles from Madison. However, I m not sure if it is open around the clock. The best thing I can tell you is to call the station directly and inquiry about their hours of operation. The phone number is (973) 377-4853.The link below show the location of the station and the driving direction from Madison.http://maps.google.com/maps?daddr=621+Sh��Good luck
Gassy Joe s on Winston Street