Haul Road Width Calculator

Audit measured usable road width into geometric vehicle-envelope slots after independent edge reserves, inverse inventory audit not existing additive road-width design; no traffic safety. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.

Description

Available road width can be compared with vehicle envelopes after explicit side reserves.

Available road width can be compared with vehicle envelopes after explicit side reserves.^[1]

This tool counts geometric slots in an observed cross-section.

When to use Haul Road Width Calculator

Use this tool to calculate or review the supplied observations under the stated rules. Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.

How to use Haul Road Width Calculator and understand its results

Match completed survey or ledger observations by block, segment or stage and confirm their units and boundaries.
Enter observedRoadUsableWidthsM, observedVehicleEnvelopeWidthsM, callerIndependentSideClearanceM, callerRequiredConcurrentVehicleCounts, using the field meanings and rules below, then run the tool.
Read observedWidthVehicleSlotCounts, signedConcurrentSlotMargins. Inspect nested result fields where present, and review unknown records separately from known matches.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
observedRoadUsableWidthsM	Observed road usable widths m	list of number	Required
observedVehicleEnvelopeWidthsM	Observed vehicle envelope widths m	list of number	Required
callerIndependentSideClearanceM	Caller independent side clearance m	list of number	Required
callerRequiredConcurrentVehicleCounts	Caller required concurrent vehicle counts	list of number	Required

Use aligned usable widths≥0, envelope widths>0, side clearance≥0 and safe-integer required vehicle counts 0..128. Return max(0,floor((width−2×clearance)/envelope)) and slots−requiredCount. Slot count is not a traffic clearance assessment.

slots_i=max(0,floor((width_i−2clearance_i)/envelope_i))

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
observedWidthVehicleSlotCounts	Observed width vehicle slot counts	list of number
signedConcurrentSlotMargins	Signed concurrent slot margins; preserve the subtraction order and sign defined in the mechanics	list of number

json

{
  "input": {
    "observedRoadUsableWidthsM": [
      10,
      12
    ],
    "observedVehicleEnvelopeWidthsM": [
      3,
      4
    ],
    "callerIndependentSideClearanceM": [
      1,
      1
    ],
    "callerRequiredConcurrentVehicleCounts": [
      2,
      3
    ]
  },
  "output": {
    "observedWidthVehicleSlotCounts": [
      2,
      2
    ],
    "signedConcurrentSlotMargins": [
      0,
      -1
    ]
  }
}

Limitations and assumptions

Units, ledger boundaries, survey interpretation and model applicability must be independently established. These summaries do not assign reserve/resource classifications or establish support adequacy, ventilation safety or an operating setting.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above.

Alternative or Complementary methods

For a related step, use Haul Road Grade Calculator: Road grade is the signed elevation change divided by station distance. For a complementary comparison, use Haul Road Rolling Resistance Calculator: A steady towing force includes grade and drag contributions alongside rolling resistance.

References

Haul Road Width Calculator — tool.io

Similar or alternative tools

Haul Road Grade Calculator
Road grade is the signed elevation change divided by station distance.
Haul Road Rolling Resistance Calculator
A steady towing force includes grade and drag contributions alongside rolling resistance.