US20070258764A1 - One-way speed bump - Google Patents
One-way speed bump Download PDFInfo
- Publication number
- US20070258764A1 US20070258764A1 US11/680,810 US68081007A US2007258764A1 US 20070258764 A1 US20070258764 A1 US 20070258764A1 US 68081007 A US68081007 A US 68081007A US 2007258764 A1 US2007258764 A1 US 2007258764A1
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- Prior art keywords
- speed bump
- rear face
- speed
- front face
- bump according
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/10—Vehicle barriers specially adapted for allowing passage in one direction only
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/529—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users specially adapted for signalling by sound or vibrations, e.g. rumble strips; specially adapted for enforcing reduced speed, e.g. speed bumps
Definitions
- the present invention relates generally to speed bumps and more particularly to one-way speed bumps which control both the speed and direction of vehicular traffic.
- Speed bumps are typically dimensioned so that a vehicle may pass over at a relatively slow speed without jarring the driver or causing damage to the vehicle.
- the present invention provides a one-way speed bump for controlling both direction and speed of traffic.
- the speed bump has a shallow front face and a steep rear face. Vehicles approaching the front face of the speed bump are allowed to pass over the speed bump at a controlled rate of speed. Vehicles attempting to pass from the wrong direction will engage the steep rear face of the speed bump. This will cause the vehicle to be jarred more so than if the vehicle traveled the correct direction. Indicia may be provided on the steep rear face to warn drivers that are considering traveling in the wrong direction to not go the wrong way.
- a speed bump comprising a bottom surface, a front face comprising a relatively shallow angle measured from the bottom surface structured and arranged to allow vehicular traffic approaching the front face to pass over the speed bump and a rear face comprising a relatively steep angle measured from the bottom surface structured and arranged to deter vehicular traffic approaching the rear face from passing over the speed bump.
- FIG. 1 illustrates a perspective view of a one-way speed bump according to one embodiment of the present invention showing the front face, top portion and anchor holes.
- FIG. 2 illustrates a top view of the speed bump of FIG. 1 .
- FIG. 3 illustrates a rear view of the speed bump of FIG. 1 showing the rear face of the speed bump.
- FIG. 4 illustrates a side view of a one-way speed bump showing the recess, dimensions, H 1 , H 2 , H 3 , W 1 , W 2 , and angles ⁇ and ⁇ according to one embodiment of the present invention.
- FIG. 5 illustrates a speed bump with a rounded front face and a round rear face.
- FIG. 6 is a side cross-sectional view of a speed bump along an anchor holes according to one embodiment of the present invention showing an anchor hole and a countersunk portion.
- FIG. 7 is a perspective view of a one-way speed bump showing the rear face, recess and indicia according to one embodiment of the present invention.
- FIG. 8 is cross-sectional perspective view of the speed bump along one of the anchor holes showing a means for mounting the speed bump to the pavement including an anchor and bolt according to one embodiment of the present invention.
- a one-way speed bump 1 according to one embodiment of the present invention shown in FIGS. 1-3 .
- the speed bump 1 has a generally flat bottom surface 2 , which faces the ground.
- the ground may comprise pavement.
- the term “pavement” as used herein is not meant to be one of limitation and can be, for example, a roadway, highway, aisle way, row or parking lot.
- the speed bump 1 may be positioned to traverse all or a portion of a road.
- road may be used interchangeably with aisle or any other surface upon which vehicles travel.
- the length of the speed bump, shown as L in FIG. 1 varies depending on the on the width of the road and may be of whatever length is necessary to control traffic. This may include aligning more that one speed bump 1 alongside others.
- the length of the speed bump is not a limitation of the device. Rather, length is a function of the road or aisle to be controlled. In one embodiment, L is 36 inches. In another embodiment, L is 72 inches.
- the speed bump may have anchor hole 12 with countersunk portions 14 . Bolts (not shown in FIGS. 1-3 ) may pass through the anchor holes 12 to affix the speed bump 1 to the pavement.
- the speed bump 1 has a front face 4 having a relatively shallow front angle.
- the speed bump 1 may have sides 3 at each end.
- the shallow front face 4 is the face of the speed bump 1 that a driver sees if approaching from the correct direction.
- the shallow front face 4 is designed to allow a vehicle traveling at a safe speed and in the correct direction to pass over the speed bump with little effect on the vehicle or driver.
- the shallow front face 4 may be set at an acute angle, shown as a in FIG. 4 , relative to the bottom, for example, an angle of about 10° to about 35°, typically about 15°.
- the speed bump 1 also has a rear face 6 having a relatively steep angle which impedes traffic going in the wrong direction. Even at a slow speed, the steep rear face 6 of the speed bump acts as a significant obstacle and deterrent for vehicles traveling in the wrong direction.
- the steep rear face 6 is positioned at an angle, shown as ⁇ , relative to the bottom, for example, about 35° to about 100°, typically about 60°.
- a top portion 8 may be located between the rear face 6 and front face 4 .
- the top portion 8 is a substantially flat surface generally parallel to the ground or pavement.
- the top portion 8 may have a dimension, shown as W 2 , of for example 0 inch to 6 inches, for example 2.1 inches.
- the top portion 8 may have a radiused width or radially transition from the front face 4 to the rear face 6 .
- the substantially flat front face 4 and rear face 6 may be replaced with curved/or faceted surfaces so as long as the overall angle of each surface is more shallow on the front face 4 than the rear face 6 .
- the overall angle refers to an angle relative to the bottom and a best-fit plane passing through the face.
- the dashed lines in FIG. 5 illustrate examples of best-fit planes for the front face 4 and the rear face 6 .
- the speed bump 1 has an overall height, shown as H 1 , sufficient to provide an impediment to vehicles traveling in the wrong direction or at a high speed in either direction.
- H 1 can be, for example, between 11 ⁇ 2 and 6 inches, for example about 2.5 inches.
- the shallow front face 4 and the bottom 2 of the speed bump 1 may be connected by a transition region, such as a short vertical edge 10 as shown in FIG. 4 .
- the vertical edge 10 may have a height, shown as H 2 , of for example 0 inch to 11 ⁇ 2 inches, for example about 0.5 inch.
- the rear face 6 and the bottom 2 of the speed bump 1 may be connected by a transition region, such as a short vertical edge 11 as shown in FIG. 4 .
- the vertical edge 10 may have a height, shown as H 3 , of for example 0 inch to 4 inches, for example about 0.4 inch.
- the speed bump 1 may have a recess 16 in the steep rear face 6 .
- the recess 16 may be provided with warning indicia located thereon so that drivers of vehicles approaching the speed bump 1 from the wrong direction will be advised of such.
- An overhang 17 above the recess 16 protects the recessed indicia from tire contact and wear.
- the recess 16 may have a dimension, shown as D in FIG. 6 , of for example 0 to 1 ⁇ 2 inch into the surface of the steep face, for example 0.2 inches.
- speed bump 1 may have anchor holes 12 .
- the anchor holes 12 are used for mounting the speed bump 1 to the pavement.
- the holes may be for example 3 ⁇ 8 inch to 3 ⁇ 4 inch diameter, for example 0.625 inch.
- the anchor holes 12 create an opening from the front face 4 to the bottom 2 of the speed bump 1 in a direction that is substantially perpendicular to the pavement.
- the anchor holes 12 are spaced along the length of the speed bump 1 to adequately secure the speed bump 1 to the pavement. In one embodiment, the anchor holes are spaced 30 inches apart.
- Countersunk portions 14 are provided to transition from the sloped surface of the front face 4 to the anchor holes 12 .
- the countersunk portions 14 have a bottom that is substantially parallel to the pavement so that the head of an anchor bolt may rest flushly thereon.
- warning indicia 20 can be seen in recess 16 .
- the warning indicia 20 may be painted on the recess 16 or may consist of a label, stencil or any other means of marking the surface so that a driver approaching from the rear face 6 is able to see the indicia.
- the warning indicia 20 are raised or recessed letters molded as part of the speed bump 1 .
- the warning indicia may recite for example “WRONG WAY” or “DO NOT ENTER”. It is also contemplated that other signage could be on the pavement or other surface in front of the steep rear face 6 .
- Speed bump 1 may be attached to the pavement using spikes, lag bolts or other hardware.
- pre-drilled holes 26 are aligned with the anchor holes 12 .
- the anchor 24 may be an expansion type anchor secured in the pre-drilled holes.
- the anchor 24 has female threads for receiving a bolt 22 .
- the bolt 22 passes through a washer 23 , through the anchor hole 12 and into the anchor 24 to hold the speed bump 1 in place.
- the speed bump 1 is removable when the bolts 22 are removed.
- Threaded plugs (not shown) may be provided with the anchors 24 . The threaded plugs may be installed in the anchors 24 when the speed bump 1 and bolts 22 are removed.
- the anchors 24 do not become packed with dirt and debris while the speed bump 1 is removed. This provides for easy installation of the bolts 22 when the speed bump 1 is replaced. The ability to remove and reinstall the speed bump 1 is helpful in climates where snowfall is likely and plowing of snow is needed.
- the speed bump 1 may be made of plastic to allow the weight to be kept low while still maintaining durability. However, other materials, such as, steel, aluminum, concrete and asphalt may be used in fabrication of the speed bump 1 so long as the structure remains substantially non-collapsible, i.e. the speed bump 1 should be able to withstand vehicular traffic without collapsing or substantial deformation. It has been contemplated that the speed bump 1 may be of modular or one-piece construction.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
A one-way speed bump for controlling both direction and speed of traffic is described. The speed bump has a shallow front face and a steep rear face. Vehicles approaching the front face of the speed bump are allowed to pass over the speed bump at a controlled rate of speed. Vehicles attempting to pass from the wrong direction will engage the steep rear face of the speed bump. This will cause the vehicle to be jolted and possibly damaged. Indicia may be provided on the steep rear face to warn drivers that they are traveling in the wrong direction.
Description
- This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/779,345 filed Mar. 3, 2006, which is herein incorporated by reference.
- The present invention relates generally to speed bumps and more particularly to one-way speed bumps which control both the speed and direction of vehicular traffic.
- In the interest of safety to other vehicles and pedestrians speed of motor vehicles should be kept to a safe level. One means for controlling vehicular speed is through the use of a speed bump placed across a road other path of travel for vehicles. Speed bumps are typically dimensioned so that a vehicle may pass over at a relatively slow speed without jarring the driver or causing damage to the vehicle.
- The present invention provides a one-way speed bump for controlling both direction and speed of traffic. The speed bump has a shallow front face and a steep rear face. Vehicles approaching the front face of the speed bump are allowed to pass over the speed bump at a controlled rate of speed. Vehicles attempting to pass from the wrong direction will engage the steep rear face of the speed bump. This will cause the vehicle to be jarred more so than if the vehicle traveled the correct direction. Indicia may be provided on the steep rear face to warn drivers that are considering traveling in the wrong direction to not go the wrong way.
- A speed bump comprising a bottom surface, a front face comprising a relatively shallow angle measured from the bottom surface structured and arranged to allow vehicular traffic approaching the front face to pass over the speed bump and a rear face comprising a relatively steep angle measured from the bottom surface structured and arranged to deter vehicular traffic approaching the rear face from passing over the speed bump.
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FIG. 1 illustrates a perspective view of a one-way speed bump according to one embodiment of the present invention showing the front face, top portion and anchor holes. -
FIG. 2 illustrates a top view of the speed bump ofFIG. 1 . -
FIG. 3 illustrates a rear view of the speed bump ofFIG. 1 showing the rear face of the speed bump. -
FIG. 4 illustrates a side view of a one-way speed bump showing the recess, dimensions, H1, H2, H3, W1, W2, and angles α and β according to one embodiment of the present invention. -
FIG. 5 illustrates a speed bump with a rounded front face and a round rear face. -
FIG. 6 is a side cross-sectional view of a speed bump along an anchor holes according to one embodiment of the present invention showing an anchor hole and a countersunk portion. -
FIG. 7 is a perspective view of a one-way speed bump showing the rear face, recess and indicia according to one embodiment of the present invention. -
FIG. 8 is cross-sectional perspective view of the speed bump along one of the anchor holes showing a means for mounting the speed bump to the pavement including an anchor and bolt according to one embodiment of the present invention. - A one-
way speed bump 1 according to one embodiment of the present invention shown inFIGS. 1-3 . Thespeed bump 1 has a generallyflat bottom surface 2, which faces the ground. In one embodiment, the ground may comprise pavement. The term “pavement” as used herein is not meant to be one of limitation and can be, for example, a roadway, highway, aisle way, row or parking lot. Thespeed bump 1 may be positioned to traverse all or a portion of a road. As used herein, “road” may be used interchangeably with aisle or any other surface upon which vehicles travel. The length of the speed bump, shown as L inFIG. 1 , varies depending on the on the width of the road and may be of whatever length is necessary to control traffic. This may include aligning more that onespeed bump 1 alongside others. It should be apparent that the length of the speed bump is not a limitation of the device. Rather, length is a function of the road or aisle to be controlled. In one embodiment, L is 36 inches. In another embodiment, L is 72 inches. As seen inFIGS. 1-3 , the speed bump may haveanchor hole 12 withcountersunk portions 14. Bolts (not shown inFIGS. 1-3 ) may pass through theanchor holes 12 to affix thespeed bump 1 to the pavement. - The
speed bump 1 has afront face 4 having a relatively shallow front angle. Thespeed bump 1 may havesides 3 at each end. The shallowfront face 4 is the face of thespeed bump 1 that a driver sees if approaching from the correct direction. The shallowfront face 4 is designed to allow a vehicle traveling at a safe speed and in the correct direction to pass over the speed bump with little effect on the vehicle or driver. The shallowfront face 4 may be set at an acute angle, shown as a inFIG. 4 , relative to the bottom, for example, an angle of about 10° to about 35°, typically about 15°. - Referring still to
FIG. 4 , thespeed bump 1 also has arear face 6 having a relatively steep angle which impedes traffic going in the wrong direction. Even at a slow speed, the steeprear face 6 of the speed bump acts as a significant obstacle and deterrent for vehicles traveling in the wrong direction. The steeprear face 6 is positioned at an angle, shown as β, relative to the bottom, for example, about 35° to about 100°, typically about 60°. - In one embodiment of the invention, a
top portion 8 may be located between therear face 6 andfront face 4. In a particular embodiment, thetop portion 8 is a substantially flat surface generally parallel to the ground or pavement. Thetop portion 8 may have a dimension, shown as W2, of for example 0 inch to 6 inches, for example 2.1 inches. In another embodiment, thetop portion 8 may have a radiused width or radially transition from thefront face 4 to therear face 6. - In another embodiment shown in
FIG. 5 , the substantiallyflat front face 4 andrear face 6 may be replaced with curved/or faceted surfaces so as long as the overall angle of each surface is more shallow on thefront face 4 than therear face 6. The overall angle refers to an angle relative to the bottom and a best-fit plane passing through the face. The dashed lines inFIG. 5 illustrate examples of best-fit planes for thefront face 4 and therear face 6. - Referring again to
FIG. 4 , thespeed bump 1 has an overall height, shown as H1, sufficient to provide an impediment to vehicles traveling in the wrong direction or at a high speed in either direction. H1 can be, for example, between 1½ and 6 inches, for example about 2.5 inches. - The shallow
front face 4 and thebottom 2 of thespeed bump 1 may be connected by a transition region, such as a shortvertical edge 10 as shown inFIG. 4 . Thevertical edge 10 may have a height, shown as H2, of for example 0 inch to 1½ inches, for example about 0.5 inch. Similarly, therear face 6 and thebottom 2 of thespeed bump 1 may be connected by a transition region, such as a shortvertical edge 11 as shown inFIG. 4 . Thevertical edge 10 may have a height, shown as H3, of for example 0 inch to 4 inches, for example about 0.4 inch. - As identified in
FIG. 6 , thespeed bump 1 may have arecess 16 in the steeprear face 6. Therecess 16 may be provided with warning indicia located thereon so that drivers of vehicles approaching thespeed bump 1 from the wrong direction will be advised of such. Anoverhang 17 above therecess 16 protects the recessed indicia from tire contact and wear. In one embodiment, therecess 16 may have a dimension, shown as D inFIG. 6 , of for example 0 to ½ inch into the surface of the steep face, for example 0.2 inches. - As shown in
FIG. 6 ,speed bump 1 may have anchor holes 12. The anchor holes 12 are used for mounting thespeed bump 1 to the pavement. The holes may be for example ⅜ inch to ¾ inch diameter, for example 0.625 inch. The anchor holes 12 create an opening from thefront face 4 to thebottom 2 of thespeed bump 1 in a direction that is substantially perpendicular to the pavement. The anchor holes 12 are spaced along the length of thespeed bump 1 to adequately secure thespeed bump 1 to the pavement. In one embodiment, the anchor holes are spaced 30 inches apart.Countersunk portions 14 are provided to transition from the sloped surface of thefront face 4 to the anchor holes 12. Thecountersunk portions 14 have a bottom that is substantially parallel to the pavement so that the head of an anchor bolt may rest flushly thereon. - Referring now to
FIG. 7 , warningindicia 20 can be seen inrecess 16. The warning indicia 20 may be painted on therecess 16 or may consist of a label, stencil or any other means of marking the surface so that a driver approaching from therear face 6 is able to see the indicia. In one embodiment, thewarning indicia 20 are raised or recessed letters molded as part of thespeed bump 1. The warning indicia may recite for example “WRONG WAY” or “DO NOT ENTER”. It is also contemplated that other signage could be on the pavement or other surface in front of the steeprear face 6. -
Speed bump 1 may be attached to the pavement using spikes, lag bolts or other hardware. In the embodiment shown inFIG. 8 ,pre-drilled holes 26 are aligned with the anchor holes 12. Theanchor 24 may be an expansion type anchor secured in the pre-drilled holes. Theanchor 24 has female threads for receiving abolt 22. Thebolt 22 passes through awasher 23, through theanchor hole 12 and into theanchor 24 to hold thespeed bump 1 in place. In the embodiment shown inFIG. 8 , thespeed bump 1 is removable when thebolts 22 are removed. Threaded plugs (not shown) may be provided with theanchors 24. The threaded plugs may be installed in theanchors 24 when thespeed bump 1 andbolts 22 are removed. In this way theanchors 24 do not become packed with dirt and debris while thespeed bump 1 is removed. This provides for easy installation of thebolts 22 when thespeed bump 1 is replaced. The ability to remove and reinstall thespeed bump 1 is helpful in climates where snowfall is likely and plowing of snow is needed. - The
speed bump 1 may be made of plastic to allow the weight to be kept low while still maintaining durability. However, other materials, such as, steel, aluminum, concrete and asphalt may be used in fabrication of thespeed bump 1 so long as the structure remains substantially non-collapsible, i.e. thespeed bump 1 should be able to withstand vehicular traffic without collapsing or substantial deformation. It has been contemplated that thespeed bump 1 may be of modular or one-piece construction. - Whereas particular embodiments of this invention have been described above for purposes of illustration, it will be evident to those skilled in the art that numerous variations of the details of the present invention may be made without departing from the invention as defined in the appended claims.
Claims (15)
1. A speed bump comprising:
a bottom surface;
a front face comprising a relatively shallow angle measured from the bottom surface structured and arranged to allow vehicular traffic approaching the front face to pass over the speed bump; and
a rear face comprising a relatively steep angle measured from the bottom surface structured and arranged to deter vehicular traffic approaching the rear face from passing over the speed bump.
2. The speed bump according to claim 1 , further comprising a top portion between the front face and the rear face.
3. The speed bump according to claim 1 , further comprising indicia on the rear face.
4. The speed bump according to claim 3 , wherein the rear face comprises a recess and wherein the indicia are located within the recess.
5. The speed bump according to claim 1 , wherein the shallow angle between the bottom surface and the front face is between about 10 and about 35 degrees.
6. The speed bump according to claim 1 , wherein the shallow angle between the bottom surface and the front face is about 15 degrees.
7. The speed bump according to claim 1 , wherein the steep angle between the bottom surface and the rear face is between about 35 and about 100 degrees.
8. The speed bump according to claim 1 , wherein the steep angle between the bottom surface and the rear face is about 60 degrees.
9. The speed bump according to claim 1 , further comprising anchor holes passing through the speed bump.
10. The speed bump according to claim 9 , wherein the anchor holes extend through the front face and the bottom surface in a direction substantially perpendicular to the bottom surface.
11. The speed bump according to claim 10 , further comprising bolts passing through the anchor holes, wherein the bolts are connected to anchors secured to a road.
11. The speed bump according to claim 1 comprising a single, solid piece of material.
12. The speed bump according to claim 1 , wherein the speed bump has an overall height of about 1½ to about 6 inches.
13. The speed bump according to claim 1 , wherein the front face is substantially flat and the rear face is substantially flat.
14. The speed bump according to claim 1 , wherein the front face is curved and the rear face is curved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/680,810 US20070258764A1 (en) | 2006-03-03 | 2007-03-01 | One-way speed bump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US77934506P | 2006-03-03 | 2006-03-03 | |
US11/680,810 US20070258764A1 (en) | 2006-03-03 | 2007-03-01 | One-way speed bump |
Publications (1)
Publication Number | Publication Date |
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US20070258764A1 true US20070258764A1 (en) | 2007-11-08 |
Family
ID=38188286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/680,810 Abandoned US20070258764A1 (en) | 2006-03-03 | 2007-03-01 | One-way speed bump |
Country Status (2)
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US (1) | US20070258764A1 (en) |
WO (1) | WO2007103709A1 (en) |
Cited By (11)
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US20100197183A1 (en) * | 2009-01-30 | 2010-08-05 | Drapela David C | Industrial absorbent from cotton regin |
US20110081201A1 (en) * | 2009-10-02 | 2011-04-07 | Scott Croce | Reflective roadway warning system indicating incorrect vehicular travel direction |
US20110217116A1 (en) * | 2008-11-14 | 2011-09-08 | Jerzy Niziolek | Segmented speed bump, especially for speed reduction |
DE102014114167A1 (en) * | 2014-09-30 | 2016-03-31 | Uwe Beier | Speed-reducing threshold and placement of thresholds with a speed-reducing threshold |
US10221530B2 (en) * | 2017-06-12 | 2019-03-05 | Driskell Holdings, LLC | Directional surface marking safety and guidance devices and systems |
US20190139413A1 (en) * | 2017-07-24 | 2019-05-09 | John R. Austin | Anti-collision warning system |
US20190177933A1 (en) * | 2017-06-12 | 2019-06-13 | Driskell Holdings, LLC | Directional Surface Marking Safety and Guidance Devices and Systems |
WO2021034991A1 (en) * | 2019-08-20 | 2021-02-25 | Morril Andrew | Directional warning system and method |
US11030893B1 (en) | 2020-06-05 | 2021-06-08 | Samuel Messinger | System for reducing speed of a vehicle and method thereof |
US11414822B2 (en) * | 2018-03-30 | 2022-08-16 | Traffix Devices, Inc. | Modular travel warning strip system and methods |
US11535993B2 (en) | 2018-03-30 | 2022-12-27 | Traffix Devices, Inc. | Modular travel warning strip system and methods |
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US9517596B2 (en) | 2011-02-24 | 2016-12-13 | New Pig Corporation | Ground containment liners |
WO2013067348A1 (en) * | 2011-11-04 | 2013-05-10 | New Pig Corporation | Berms for protective liners |
CN104762895B (en) * | 2014-01-06 | 2017-01-25 | 何思妮 | Highway one-way limiting plate |
FR3106144B1 (en) * | 2020-01-10 | 2021-12-24 | Philippe Morin | Signaling device to identify parking spaces |
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US6659682B2 (en) * | 1997-03-12 | 2003-12-09 | Autospan Limited | Deformable speed hump |
US20020085881A1 (en) * | 1997-03-12 | 2002-07-04 | Graham Heeks | Deformable speed bump |
US6726399B2 (en) * | 1998-03-12 | 2004-04-27 | Autospan Limited | Valve arrangement and traffic calming device incorporating such an arrangement |
US20020001505A1 (en) * | 1998-11-04 | 2002-01-03 | Bond Michael L. | Speed sensitive automatic speed bump |
US6623206B1 (en) * | 1999-04-07 | 2003-09-23 | Pmg, Inc. | Portable speed bump |
US20040123407A1 (en) * | 2002-12-27 | 2004-07-01 | Solon Joseph J. | Speed bumps formed from tire tread strip laminations |
US6877929B1 (en) * | 2003-09-24 | 2005-04-12 | Chih-Cheng Yang | Speed hump device |
US7011470B1 (en) * | 2004-03-29 | 2006-03-14 | Orville Alan Breazeale | Retractable speed bump |
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US20100197183A1 (en) * | 2009-01-30 | 2010-08-05 | Drapela David C | Industrial absorbent from cotton regin |
US20110081201A1 (en) * | 2009-10-02 | 2011-04-07 | Scott Croce | Reflective roadway warning system indicating incorrect vehicular travel direction |
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DE102014114167B4 (en) * | 2014-09-30 | 2020-02-06 | Uwe Beier | Speed-reducing threshold and arrangement of thresholds with a speed-reducing threshold |
US20190177933A1 (en) * | 2017-06-12 | 2019-06-13 | Driskell Holdings, LLC | Directional Surface Marking Safety and Guidance Devices and Systems |
US10221530B2 (en) * | 2017-06-12 | 2019-03-05 | Driskell Holdings, LLC | Directional surface marking safety and guidance devices and systems |
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US20190139413A1 (en) * | 2017-07-24 | 2019-05-09 | John R. Austin | Anti-collision warning system |
US11414822B2 (en) * | 2018-03-30 | 2022-08-16 | Traffix Devices, Inc. | Modular travel warning strip system and methods |
US11535993B2 (en) | 2018-03-30 | 2022-12-27 | Traffix Devices, Inc. | Modular travel warning strip system and methods |
US11773546B2 (en) | 2018-03-30 | 2023-10-03 | Traffix Devices, Inc. | Modular travel warning strip system and methods |
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US11030893B1 (en) | 2020-06-05 | 2021-06-08 | Samuel Messinger | System for reducing speed of a vehicle and method thereof |
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