Quick answer
Protection uses routed road miles and estimated drive time. Straight-line distance can miss divided roads, bridges, gates, dead ends, and indirect access.
How the signal works
Distance sets remote gates above 5 and 7 road miles. At shorter distances, time buckets determine the base value.
Limits and next step
Routing estimates describe modeled access, not live emergency response. Enter a US street address to test its road connection.
Why it matters
This rule separates a property route from a place label and a visible input from a broader conclusion. It lets a reader explain which rule controlled the result without implying facts the calculation never measured.
How the signal works
Distance gates run first: above 7 road miles gives base 10, and above 5 road miles gives base 9. At 5 miles or less, estimated time gives base 1 at 3 minutes or less, 2 at 4, 3 at 5, 4 at 6, 5 at 7, 6 at 8, 7 at 10, and 8 above 10 minutes. A volunteer signal in the public station name adds one, capped at 10. Strong covers 1 through 3, Adequate covers 4 through 6, Limited covers 7 through 8, and Remote covers 9 through 10. Lower is stronger.
Worked numbers or counterfactual
This example is illustrative. E2: 3.8 road miles and 7 minutes with no volunteer signal gives base 5 and final 5 Adequate. A short straight line across a river can hide a longer bridge route. Only road routing supplies the model inputs.
The comparison changes one governing fact at a time. It teaches the calculation and does not report a live property result.
Limits and misconceptions
Protection excludes hydrants, water supply and flow, building construction, sprinklers, alarms, apparatus, detailed staffing, mutual aid, live dispatch, current traffic, and incident conditions. It cannot predict response or loss. A station name signal is a heuristic and does not certify staffing. Area pages show HIFLD station context and never receive a city, county, or ZIP Protection number. HIFLD rows represent stations rather than departments, and a source CITY value does not establish jurisdiction.
How to read this on a result
Read the band and number first, remembering that lower is stronger. Then inspect road miles before minutes because a distance gate can control the base. Check the selected station name, whether the volunteer heuristic applied, the methodology version, and any missing-data notice. Missing road miles or drive time produces no Protection number rather than a guessed default.
Related
Read the methodology, worked examples, Protection glossary, and source notes. The score-reading guide supplies the shared sequence.
Next step
Check a US street address for its routed inputs, or follow the address-check guide.
A practical review
Miles and minutes can move together, but they remain separate inputs. A longer road route often takes longer, yet road class, turns, and network shape can produce different modeled times for similar mileage. The formula preserves this distinction until the 5-mile gate. Below or at that boundary, minutes choose the base. Above it, mileage controls. This is why a result should display both values rather than only the final band.
A second check is to state what would change the result. A different routed distance, modeled time, station candidate, or applicable volunteer name signal can change the arithmetic. Facts outside those inputs require their own source and cannot be used to reverse-engineer a Protection value.
Recording the evidence
When a result informs later research, record the complete submitted address, calculation date, methodology version, road miles, estimated minutes, selected station name, whether the volunteer name signal applied, final value, and band. This small evidence trail preserves the reason for the result. A copied band without inputs loses the calculation path and invites assumptions about facts outside the model.
If a later check differs, compare the inputs before interpreting the change. Address resolution, station candidates, public station names, road data, and routing estimates can update independently. The visible evidence can show whether the formula, the source, or the route changed.