for three minutes to load or unload passengers. Commercial loading zones are in effect between 6:00 AM and 6:00 PM, Sundays and City holidays excepted, unless otherwise posted. Blue Green . ONE-HOUR AND TWO-HOUR TIME LIMIT PARKING ZONES . Time limit parking zones are designated by signs. These zones are in effect 8:00 AM to 6:00 PM,
All 5 wireless providers also maintain legacy networks; of these, AT&T and T-Mobile use 2G GSM/EDGE and 3G UMTS (mostly converted to 4G HSPA+), while Verizon, Sprint, and U.S. Cellular use cdmaOne/EV-DO/1xRTT.
The GSM network operates on different frequencies depending on the system used, whether 2G or 3G. Each frequency is then subdivided into different channels that allow for short bursts of digital information to be sent via the GSM connection.