EP0923661A1 - Deformable speed hump - Google Patents

Deformable speed hump

Info

Publication number
EP0923661A1
EP0923661A1 EP98909614A EP98909614A EP0923661A1 EP 0923661 A1 EP0923661 A1 EP 0923661A1 EP 98909614 A EP98909614 A EP 98909614A EP 98909614 A EP98909614 A EP 98909614A EP 0923661 A1 EP0923661 A1 EP 0923661A1
Authority
EP
European Patent Office
Prior art keywords
deflation
apertures
thereover
reinflation
vehicle
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.)
Granted
Application number
EP98909614A
Other languages
German (de)
French (fr)
Other versions
EP0923661B1 (en
Inventor
Graham Heeks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autospan Ltd
Original Assignee
Texas Innovations Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Texas Innovations Ltd filed Critical Texas Innovations Ltd
Publication of EP0923661A1 publication Critical patent/EP0923661A1/en
Application granted granted Critical
Publication of EP0923661B1 publication Critical patent/EP0923661B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 speed hump can be either an asphalt or block paviour mound, which are formed directly upon the existing road surface or as an alternative can be made from a solid compound such as plastic which again can be fitted to the road surface .
  • a road traffic speed control device which is locatable in a roadway, is formed of a resiliently deformable material and is deflatable by the passage of a vehicle thereover at the intended speed limit of said vehicle in said roadway, in use.
  • the device may be formed from an extruded or compressed partially recyclable rubber compound.
  • the device may be generally semi-cylindrical or sinusoidal in transverse cross-section and may be formed with perforations or apertures therein to permit deflation.
  • valve means may be located in a side wall of the device to allow deflation and reinflation, in use.
  • One or more helical springs which may be encased in a split sleeve, may be located within the device to assist in shape retention.
  • the device may be formed with perforations, apertures or valve means to provide deflation thereof with passage thereover of a vehicle travelling from a minimum speed of 5 mph through increments to a required maximum.
  • the device may be formed such that subsequent to deflation by the front wheels of a vehicle passing thereover, reinflation may be delayed to allow the rear wheels to pass thereover during such initial deflation.
  • Fig.l shows a schematic end sectional view of a road traffic speed control device and fixing therefor
  • Fig.2 shows a plan view of the device of Fig.l;
  • Figs 2A and 2B show sectional views along the lines A-A and B-B respectively of Fig, 2 ;
  • Fig.3 is a schematic sectional view of devices of Figs 1 and 2 located across a road;
  • Fig.4 is a schematic perspective view of a device showing drainage to discharge surface water
  • Fig.5 is a schematic end sectional view of an alternative device including a two-way valve for controlling deflation and reinflation, in use;
  • Fig.6 is a perspective view from above of a further alternative embodiment
  • Fig.7 is a schematic side sectional view of the embodiment of Fig 7.
  • a road traffic speed control device D is preferably formed from an extruded or compressed recyclable rubber compound.
  • the shape represents a semi-cylindrical, sectional shape in construction with a series of apertures 3 formed through the profiled casing, which allows the circulation of air under controlled circumstances to be released, thus deflating the device D into a level plane giving a smooth passage to a vehicle passing thereover.
  • a helical spring 4 encased in a suitable split sleeve 5 is installed at the centre of the device D.
  • a spreader plate or washer 6 is inserted at the base of the protective shroud during the curing procedure to help relieve the impact force when in operation.
  • the device D is tapered into a fillet 7 at each end of the base line thereof.
  • the device D is preferably produced in 750 mm sections accompanied by tailor made inserts 8 to complete a road crossing (determined during the on site survey) .
  • a 50mm spacer 9 is moulded onto the end of the unit which is interlocked at 10 to provide an overall 05mm expansion gap giving added rigidity to the whole structure.
  • the device D is attached to a road surface by bolts 2 engaging into anchoring devices 1 located in the road surface.
  • the idea profile is 750mm in width and 100mm in height . This is uniform throughout the entire structure which enables vehicle manufacturers to work to a stated height restriction from the top of the hump to the underside of the vehicle similar to the restriction placed on high sided vehicles. Should damage occur, the section in question can be simply unbolted and replaced by a standard length of device causing minimal disruption and with no road excavation taking place
  • the number and size of apertures 3 is determined to allow the device D to be deflated by the front wheels of a vehicle passing thereover, providing the vehicle is not exceeding a predetermined speed.
  • the device does not deflate and acts substantially as a rigid hump.
  • Fig.3 shows a device D with drainage apertures
  • Fig.5 shows an alternative device D having a two-way valve 13 provided to control deflation and reinflation and may be adjustable to control maximum speed at which deflation does not occur.
  • a two-way valve 13 provided to control deflation and reinflation and may be adjustable to control maximum speed at which deflation does not occur.
  • Figures 6 and 7 show a further alternative embodiment in which the cross section of the device is generally sinusoidal so as to provide a relatively smooth passage over a solid run up portion 14 of the device prior to a vehicle traversing the deflatable portion D.
  • the device provides a relatively smooth passage to vehicles travelling within a stipulated speed limit which is particularly important for emergency vehicles carrying injured passengers. Furthermore damaged portions of the device can be replaced easily without the requirement for excavation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
  • Traffic Control Systems (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Scissors And Nippers (AREA)

Abstract

A road traffic speed control device (D) which may be placed in a road, is produced from a resiliently deformable material, so that vehicles travelling within an intended speed limit cause the device (D) to deflate, minimising any inconvenience for road users. The device (D) may be produced from a extruded or compressed partially recyclable rubber compound, with perforations or apertures (3) within it to permit deflation. Valve means (13, fig. 5), in addition to or instead of the apertures (3), may be provided in the side walls to permit reinflation, and a helical spring (5, fig. 1) within the device (D) assists in the retention of the device's shape. The device (D) may be formed so that the reinflation of the device (D) is delayed until the rear wheels of a vehicle have also passed over it.

Description

DEFORMABLE SPEED HUMP
Speed humps or ^Sleeping Poϊiceman' as they are better know, are well known deterrents for speeding motorists and are becoming more widely used through the traffic calming measures being imposed by local authorities. The present speed hump can be either an asphalt or block paviour mound, which are formed directly upon the existing road surface or as an alternative can be made from a solid compound such as plastic which again can be fitted to the road surface .
According to the authorities and surveys of public opinion it is essential to reduce the speed of motorist in general especially on inner city urban carriage ways . The present systems of speed control are costly and disruptive, with the tax payer and local businesses bearing the cost. Additionally the confusion caused to an already congested road network is totally unacceptable with journey times increasing and repairs to the roads never ending.
It is a object of the present invention to obviate or mitigate the above problems .
According to the invention there is provideα a road traffic speed control device which is locatable in a roadway, is formed of a resiliently deformable material and is deflatable by the passage of a vehicle thereover at the intended speed limit of said vehicle in said roadway, in use. The device may be formed from an extruded or compressed partially recyclable rubber compound.
The device may be generally semi-cylindrical or sinusoidal in transverse cross-section and may be formed with perforations or apertures therein to permit deflation.
Alternatively or in addition, valve means may be located in a side wall of the device to allow deflation and reinflation, in use.
One or more helical springs, which may be encased in a split sleeve, may be located within the device to assist in shape retention.
The device may be formed with perforations, apertures or valve means to provide deflation thereof with passage thereover of a vehicle travelling from a minimum speed of 5 mph through increments to a required maximum.
The device may be formed such that subsequent to deflation by the front wheels of a vehicle passing thereover, reinflation may be delayed to allow the rear wheels to pass thereover during such initial deflation. The foregoing and further features of the invention may be more readily understood from the following description of preferred embodiments thereof, by way of example with reference to the accompanying drawings in which: -
Fig.l shows a schematic end sectional view of a road traffic speed control device and fixing therefor;
Fig.2 shows a plan view of the device of Fig.l; Figs 2A and 2B show sectional views along the lines A-A and B-B respectively of Fig, 2 ;
Fig.3 is a schematic sectional view of devices of Figs 1 and 2 located across a road;
Fig.4 is a schematic perspective view of a device showing drainage to discharge surface water;
Fig.5 is a schematic end sectional view of an alternative device including a two-way valve for controlling deflation and reinflation, in use;
Fig.6 is a perspective view from above of a further alternative embodiment, and
Fig.7 is a schematic side sectional view of the embodiment of Fig 7.
Referring now to the drawings a road traffic speed control device D is preferably formed from an extruded or compressed recyclable rubber compound. The shape represents a semi-cylindrical, sectional shape in construction with a series of apertures 3 formed through the profiled casing, which allows the circulation of air under controlled circumstances to be released, thus deflating the device D into a level plane giving a smooth passage to a vehicle passing thereover.
To assist in the shape retention a helical spring 4 encased in a suitable split sleeve 5 is installed at the centre of the device D. To secure the unit a spreader plate or washer 6 is inserted at the base of the protective shroud during the curing procedure to help relieve the impact force when in operation. Also to assist in the distribution of the impact forces, the device D is tapered into a fillet 7 at each end of the base line thereof. The device D is preferably produced in 750 mm sections accompanied by tailor made inserts 8 to complete a road crossing (determined during the on site survey) . To assist in the equal spacing of the device D a 50mm spacer 9 is moulded onto the end of the unit which is interlocked at 10 to provide an overall 05mm expansion gap giving added rigidity to the whole structure.
The device D is attached to a road surface by bolts 2 engaging into anchoring devices 1 located in the road surface.
The idea profile is 750mm in width and 100mm in height . This is uniform throughout the entire structure which enables vehicle manufacturers to work to a stated height restriction from the top of the hump to the underside of the vehicle similar to the restriction placed on high sided vehicles. Should damage occur, the section in question can be simply unbolted and replaced by a standard length of device causing minimal disruption and with no road excavation taking place
The number and size of apertures 3 is determined to allow the device D to be deflated by the front wheels of a vehicle passing thereover, providing the vehicle is not exceeding a predetermined speed.
Should the vehicle be travelling at a speed exceeding the predetermined maximum; the device does not deflate and acts substantially as a rigid hump.
Fig.3 shows a device D with drainage apertures
12 covered with mesh to prevent the ingress of leaves or other debris into device D.
Fig.5 shows an alternative device D having a two-way valve 13 provided to control deflation and reinflation and may be adjustable to control maximum speed at which deflation does not occur. Such valve
13 may be provided in addition to apertures 3 or as on alternative thereto. Figures 6 and 7 show a further alternative embodiment in which the cross section of the device is generally sinusoidal so as to provide a relatively smooth passage over a solid run up portion 14 of the device prior to a vehicle traversing the deflatable portion D.
The device provides a relatively smooth passage to vehicles travelling within a stipulated speed limit which is particularly important for emergency vehicles carrying injured passengers. Furthermore damaged portions of the device can be replaced easily without the requirement for excavation.

Claims

, CLAIMS :
1. A road traffic speed control device which is locatable in a roadway, is formed of a resiliently deformable material and is deflatable by the passage of a vehicle thereover at the intended speed limit, in use .
2. A device as claimed in claim 1 formed from an extruded or compressed partially recyclable rubber compound.
3. A device as claimed in claim 1 or 2 which has a semi-cylindrical or generally sinusoidal transverse cross-section.
4. A device as claimed in any preceeding claim formed with perforations or apertures therein to permit deflation, in use.
5. A device as claimed in any preceeding claim including valve means located in a side wall of the device to allow deflation and reinflation, in use.
6. A device as claimed in any preceding claim wherein one or more helical springs are located within the device to assist in shape retention.
7. A device as claimed in any preceding claim wherein the device is formed with perforations, apertures or valve means to provide deflation thereof with passage thereover of a vehicle travelling from a minimum speed of 5 mph through increments to a required maximum, in use.
8. A device as claimed in any preceeding claim wherein the device is formed such that subsequent to deflation by the front wheels of a vehicle passing thereover, reinflation may be delayed to allow the rear wheels to pass thereover during such initial deflation, in use.
9. A road traffic speed control device substantially as hereinbefore described with reference to the accompanying drawings.
EP98909614A 1997-03-12 1998-03-12 Deformable speed hump Expired - Lifetime EP0923661B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9705078 1997-03-12
GBGB9705078.5A GB9705078D0 (en) 1997-03-12 1997-03-12 Improvements relating to road traffic speed control devices
PCT/GB1998/000748 WO1998040563A1 (en) 1997-03-12 1998-03-12 Deformable speed hump

Publications (2)

Publication Number Publication Date
EP0923661A1 true EP0923661A1 (en) 1999-06-23
EP0923661B1 EP0923661B1 (en) 2004-01-02

Family

ID=10809091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98909614A Expired - Lifetime EP0923661B1 (en) 1997-03-12 1998-03-12 Deformable speed hump

Country Status (9)

Country Link
EP (1) EP0923661B1 (en)
AT (1) ATE257198T1 (en)
AU (1) AU744744B2 (en)
CA (1) CA2289921C (en)
DE (1) DE69820842T2 (en)
ES (1) ES2214700T3 (en)
GB (2) GB9705078D0 (en)
HK (1) HK1022005A1 (en)
WO (1) WO1998040563A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0004360D0 (en) * 2000-02-25 2000-04-12 Imi Norgren Ltd Valve
EP1257710B1 (en) * 1998-03-12 2010-07-28 Autospan Limited Traffic calming device incorporating a valve arrangement
WO2001063051A1 (en) 1998-03-12 2001-08-30 Autospan Limited Valve arrangement and traffic calming device incorporating such an arrangement
GB0103501D0 (en) 2001-02-13 2001-03-28 Autospan Ltd Road furniture and methods of installation thereof
US7476052B2 (en) * 2001-09-20 2009-01-13 Brett Osmund Hall Retractable fluid-filled speed bump/vehicle restrictor
KR100431963B1 (en) * 2002-03-08 2004-05-17 주식회사 다산이엔지 The speed bumper
GB2403758A (en) * 2003-07-09 2005-01-12 Fabian Acker Deformable speed hump
GB2409698A (en) * 2003-12-31 2005-07-06 Alan Martin Walker Variable traffic calming system
NL1028461C2 (en) 2005-03-04 2006-09-06 Alfred Spijkerman Speed bump.
CN112301902A (en) * 2019-07-26 2021-02-02 王绍宇 Valve type deceleration strip
IT201900014439A1 (en) * 2019-08-08 2021-02-08 Heureka Ambiente S R L Automatic protection bollard.
DE202021104187U1 (en) * 2021-08-05 2021-09-30 Volkmann Strassen- und Verkehrstechnik GmbH Component

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720181A (en) * 1971-03-29 1973-03-13 J Elkins Inflatable warning device for roadways
US4362424A (en) * 1980-07-30 1982-12-07 Barber Gerald L Speed bump
FR2622034A1 (en) * 1987-10-16 1989-04-21 Masair Audible warning-decelerator device intended for equipping a traffic lane
EP0370154A1 (en) * 1988-11-25 1990-05-30 Dominique Mareau Deterrent device prompting motor vehicle drivers to slow down
FR2699567B1 (en) * 1992-12-22 1998-10-09 Jacques Robin Retractable retarder.
GB2288419A (en) * 1994-04-11 1995-10-18 Benjamin Beveridge Deformable speed bump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9840563A1 *

Also Published As

Publication number Publication date
CA2289921C (en) 2005-12-20
AU744744B2 (en) 2002-02-28
CA2289921A1 (en) 1998-09-17
AU6410198A (en) 1998-09-29
EP0923661B1 (en) 2004-01-02
GB9705078D0 (en) 1997-04-30
ES2214700T3 (en) 2004-09-16
GB2324326A (en) 1998-10-21
GB2324326B (en) 2001-12-19
WO1998040563A1 (en) 1998-09-17
DE69820842D1 (en) 2004-02-05
GB9805331D0 (en) 1998-05-06
DE69820842T2 (en) 2004-12-30
ATE257198T1 (en) 2004-01-15
HK1022005A1 (en) 2000-07-21

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