Glossary of Terms
IBTTA’s transportation Glossary of Terms is an ever-changing list of terms used within the transportation and tolling industry. The Glossary was updated in August, 2018. If you have suggestions for future additions, please contact us.
Title |
Description |
|---|---|
| GALILEO |
The GALILEO satellite radio navigation system, an initiative launched by the European Union and the European Space Agency, is based on a constellation of 30 satellites and ground stations providing information concerning the positioning of users in many sectors, including transport. |
| Gantry |
A physical structure, generally located over the toll lanes, used for the location of ETC equipment, signs, etc. |
| GIS |
Geographic Information System. A data management system designed to collect analyse and report geographic and demographic information. |
| GNSS |
Global Navigation Satellite System |
| GPS |
Global Positioning System used for positioning and road segment identification. Similar to GALILEO. |
| Gridlock |
The situation on a road where demand exceeds capacity to the extent that traffic is rendered stationary for unacceptable periods. |
| GSM |
Global System for Mobile Communications |