| 发明名称 |
Automatic determination of traffic signal preemption using GPS, apparatus and method |
| 摘要 |
For qualification for traffic preemption an area is defined and if the vehicle is in the area it can obtain preemption. The vehicle's position is determined, in one embodiment, by use of differential GPS.
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| 申请公布号 |
US5986575(A) |
申请公布日期 |
1999.11.16 |
| 申请号 |
US19970893232 |
申请日期 |
1997.07.15 |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
JONES, GARY V.;JUDGE, KEVIN;BECK, JAMES C.;KEEGAN, RICHARD |
| 分类号 |
G01S5/14;G01S19/41;G01S19/48;G08G1/07;G08G1/087;(IPC1-7):G08G1/07 |
主分类号 |
G01S5/14 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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