FR2638687B1 - DEVICE FOR EVALUATING THE SAFETY DISTANCES BETWEEN TWO VEHICLES - Google Patents
DEVICE FOR EVALUATING THE SAFETY DISTANCES BETWEEN TWO VEHICLESInfo
- Publication number
- FR2638687B1 FR2638687B1 FR8814619A FR8814619A FR2638687B1 FR 2638687 B1 FR2638687 B1 FR 2638687B1 FR 8814619 A FR8814619 A FR 8814619A FR 8814619 A FR8814619 A FR 8814619A FR 2638687 B1 FR2638687 B1 FR 2638687B1
- Authority
- FR
- France
- Prior art keywords
- evaluating
- vehicles
- safety distances
- distances
- safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Traffic Control Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8814619A FR2638687B1 (en) | 1988-11-09 | 1988-11-09 | DEVICE FOR EVALUATING THE SAFETY DISTANCES BETWEEN TWO VEHICLES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8814619A FR2638687B1 (en) | 1988-11-09 | 1988-11-09 | DEVICE FOR EVALUATING THE SAFETY DISTANCES BETWEEN TWO VEHICLES |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2638687A1 FR2638687A1 (en) | 1990-05-11 |
FR2638687B1 true FR2638687B1 (en) | 1992-06-05 |
Family
ID=9371713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8814619A Expired - Fee Related FR2638687B1 (en) | 1988-11-09 | 1988-11-09 | DEVICE FOR EVALUATING THE SAFETY DISTANCES BETWEEN TWO VEHICLES |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2638687B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2673004A1 (en) * | 1991-02-15 | 1992-08-21 | X Ial | ROAD INFORMATION VISUALIZATION SET FOR THE DRIVING STATION OF A RAILWAY VEHICLE. |
FR2817807B1 (en) | 2000-12-13 | 2003-04-25 | Peugeot Citroen Automobiles Sa | DRIVING ASSISTANCE SYSTEM FOR A MOTOR VEHICLE |
FR2863050B1 (en) * | 2003-11-27 | 2006-03-10 | Peugeot Citroen Automobiles Sa | DEVICE FOR MEASURING THE DISTANCE BETWEEN TWO VEHICLES. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2884238A (en) * | 1956-09-07 | 1959-04-28 | George H Renz | Mechanically driven tachometer indicator |
FR1588197A (en) * | 1968-03-27 | 1970-04-10 | ||
US3715721A (en) * | 1971-02-23 | 1973-02-06 | Nat Res Dev | Vehicle station keeping device |
GB1418891A (en) * | 1972-01-28 | 1975-12-24 | Nat Res Dev | Headup display aparatus |
DE2302684A1 (en) * | 1973-01-19 | 1974-07-25 | Koyu Saito | SPEEDOMETER DISPLAY DEVICE |
JPS60192912A (en) * | 1984-03-14 | 1985-10-01 | Nissan Motor Co Ltd | Indicator for vehicle |
-
1988
- 1988-11-09 FR FR8814619A patent/FR2638687B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2638687A1 (en) | 1990-05-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |