Traffic alert warning system and method for alerting vehicle operators of road conditions
US5815802A · kind A · utility
24Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jul 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/18
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A traffic alert warning system and method is provided for transmitting a road condition message to operators of vehicles when the system determines that a frequency channel to be used in broadcasting the message is not being used. The traffic alert warning system includes an activity level monitoring circuit for measuring the communication activity of the frequency channel, a channel availability logic circuit for determining if the frequency channel is available for transmission, a storage unit for storing a road condition message, and a transmitter assembly for transmitting the road condition message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.