Lonta AI / field economics lab

Price the drive before expanding the ad radius.

Compare a straight-line circle with seven saved routes from Seattle City Hall. Then put your own job and crew assumptions beside the travel. The map and calculator work offline.

Real public route snapshot. Invented financial defaults. Collected October 24, 2026 from FOSSGIS OSRM's car server. These are modeled routes, without live traffic or fleet observations. Only seven civic destinations are available; this tool cannot route another address.

1. Set the planning limits

Circle radius (straight-line miles) Maximum outbound minutes Travel charged to the job

Both thresholds include their boundary. Changing the circle reclassifies these seven points; it does not create an isochrone or show Google ad eligibility.

2. Enter one job's economics

All defaults below are invented USD assumptions. Use collected amounts and consistent cost definitions.

Net collections per job ($) Variable job costs ($)Parts, on-site labor and other variable job costs. Exclude vehicle travel cost charged below. On-site elapsed hours Technicians in this crew Vehicle cash per route mile ($)One vehicle. Excludes labor; add actual tolls/ferry fares separately to job costs if applicable. Travel wage cost per tech-hour ($) Additional foregone contribution per tech-hour ($)Residual lost contribution after wages already counted. Do not enter the same wage again. Available crew-hours in your windowSum of technician-hours, not elapsed hours. Two techs × four hours = eight.

Deduct travel wages here. Uncheck if already included in variable job costs. Also deduct additional foregone contribution. Use only when travel displaces other work.

Keep additional foregone contribution at zero if unknown. With an empty board it may be zero. Contribution after opportunity cost is a decision measure; it is not cash profit.

3. Compare the circle with the route

Teal: inside both limits. Orange: inside radius, above time limit. Purple: inside time, outside radius. Gray: outside both or unknown. Numbered civic points match the table. Select a point or table button.

Inspect a saved destination

Geographic plot with north up; route traces only, without a basemap. Circle uses a spherical great-circle radius. © OpenStreetMap contributors, ODbL 1.0. Routing: OSRM / FOSSGIS. Fix the map.

Jobs fitting the entered hours is only an arithmetic upper bound for identical jobs and this crew. It does not check shifts, skills, appointments or travel between customers.

All seven selected destinations; financial results use your current assumptions
Destination	Straight mi	Out route mi	Out min	Return min	Limits	Travel cash	Decision contribution

Read the result with the dispatch board

Cash contribution = collections − variable job costs − vehicle travel cash − extra travel wages. Decision contribution also subtracts your optional additional foregone contribution. Fixed overhead, ad acquisition cost and taxes still need coverage. A positive result alone does not approve a job.

Return travel comes from a separate directed table request, rather than doubling outbound time. The provider returned driving-only steps for all seven outbound routes, including long road paths to Bainbridge Island and Bremerton. The result does not evaluate an alternative ferry journey, ferry wait, fare or timetable.

Method, downloads and source

Origin: Seattle City Hall, a public central reference rather than a contractor's shop. Destinations were selected before routing: Bellevue, Kirkland, Redmond, Renton, Burien, Bainbridge Island and Bremerton city halls. Seven points illustrate different directions and crossings; they are not a representative sample of customers, cities or service territories.

Coordinates are saved Nominatim/OpenStreetMap search results with OSM object IDs. Haversine uses the input coordinates and a mean Earth radius of 3,958.7613 statute miles. Route distances and durations use the provider's snapped road positions. A missing route remains unknown. The API did not supply its graph-data timestamp.

Get the complete offline kit, route CSV, full snapshot and request URLs, method and run instructions, calculator source and Node tests. In the extracted kit all links are local except explicitly labeled source/attribution links.