cattle grid
Let an agent explain cattle grids and how they work, relay design standards, installation and effectiveness from highway and agricultural sources, describe uses and alternatives, and distinguish cattle grids from gates, fences and painted virtual grids.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What a cattle grid is.
Definition
Definition.
Definition
Definition.
- What is a cattle grid, how does it stop livestock, and how does it differ from gates, fences and painted grids? definition
- Is the question about the device, installation, safety or a specific site? boundary
Kinds
Kinds.
Kinds
Kinds.
- What are steel, concrete, portable, painted and wildlife grids? definition
- Which entry fits the specific kind? action
Install Design and installation.
Standards
Standards.
Standards
Standards.
- What do standards specify for load, bar spacing, pit depth and bypass gates? provenance
- Which references are standard? provenance
Installation
Installation and maintenance.
Installation
Installation.
- How are cattle grids installed and maintained? action
- Which sources are cited? provenance
Use Use and effectiveness.
Effectiveness
Effectiveness.
Effectiveness
Effectiveness.
- How effective are cattle grids for different animals, and how do painted grids perform, as studies report? provenance
- Which entry fits livestock fencing? action
Safety
Safety.
Safety
Safety.
- What risks do grids pose to cyclists, horses and wildlife, and how are they mitigated? provenance
- Which entry fits road safety? action
Context History and places.
History
History.
History
History.
- How did cattle grids develop from railway stock guards to road grids? provenance
- Which entry fits the history of fencing? action
Places
Where used.
Places
Places.
- Where are cattle grids common, from open range in the US to British moorland? provenance
- Which entry fits open range? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.BLT
What it is Filled
A barrier set into a road surface consisting of parallel metal or concrete bars over a shallow pit, which vehicles can cross and which is intended to deter hoofed animals such as cattle, sheep and deer, with effectiveness varying by animal, design and condition, used at boundaries of open range, moorland, farms and parks in place of a gate; also called a cattle guard or stock grid, it is a fixed construction with standards for load, spacing and safety.
Why it exists Filled
Let an agent explain cattle grids and how they work, relay design standards, installation and effectiveness from highway and agricultural sources, describe uses and alternatives, and distinguish cattle grids from gates, fences and painted virtual grids.
Distinguishing features Filled
- Vehicle passable
- Livestock barrier
- Pit and bars
- Standardised
What robots and AI may and may not do Filled
Must not
- Remove or cover a cattle grid without the landowner's or highway authority's permission.
- Leave a bypass gate open so livestock can escape onto roads.
- Leave an animal trapped in a pit without calling for help.
Only with a human decision
- Freeing a trapped animal or closing a road to repair a grid.
May
- Inspect cattle grids for broken bars, blocked pits and trapped animals and report them.
- Explain their use at open range, moorland and park boundaries.
Moral aspects Filled
- Animals can be injured or trapped in pits; wildlife exits reduce the harm.
- Stray livestock on roads cause serious crashes.
Who is affected
- Livestock and wildlife
- Road users
- Farmers
Owners Filled
Steward
The highway authority or landowner where it is installed.
Links to other meta-models Filled
parent
- Q811430 - registry parent class
related
- fixed construction - in registry terms
- fence - to enclose land
- gate - which must be opened
- road - at land boundaries
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.cattle-grid
- Wikidata: Q2164694 (https://www.wikidata.org/wiki/Q2164694)
Direct properties required Filled
- typical width: about 2.5-4 m - along the road
- bar spacing: about 100-150 mm - gaps
- UK standard: BS 4008 note
Recognition required Filled
- Bar grid in the road that hooves avoid
- Cattle guard, stock grid
- A gate must be opened; a fence blocks all traffic; painted grids rely on illusion
- A set of parallel bars across the road over a pit.
Capabilities and actions required Filled
- explain the design
- relay standards and installation
- describe uses and alternatives
- distinguish related barriers
Hazards and failure modes required Filled
- Injury to animals with small hooves and to cyclists
- Grids filling with debris
- Confusing with painted grids
Standards and interfaces required Filled
- BS 4008 and equivalent national standards
- Highway authority rules on installation and bypass gates
- Animal welfare guidance on grid design
Context of use required Filled
- Keeping livestock in while letting vehicles pass.
- steel cattle grids
- concrete cattle grids
- temporary and portable grids
- painted or virtual cattle grids
- wildlife grids for deer
Sources Filled
- Wikidata item Q2164694: cattle grid - identity and sense of the item
- Wikipedia: Cattle grid - general description of the item
Open questions
- Should painted cattle grid be a separate entry?
- How should highway sources be linked?
- How should national naming variants be recorded?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q2164694/spec.json