CALIBRATED ROUTING • ENGINE ARCHITECTURE • 2026 EDITION

How PlanDrivo works. From GPS to rupee-exact estimate.

Behind every trip estimate is a 4-layer computational engine combining Open Source Routing Machine telemetry, official NHA toll matrices, and live OGRA petroleum rates.

01OSRM Vector Routing
02Powertrain Physics
03Live OGRA Fuel Index
04NHA M-Tag Toll Plazas
THE 4-STEP METHODOLOGY

Four steps. Zero surprises on the road.

Every route calculation synthesizes real road geometry, live fuel pricing, and toll plaza tariffs before you start the car.

STEP 01: THE ROAD01

Route Ingestion & Telemetry

When you enter your Origin and Destination (or add multiple waypoints), PlanDrivo queries high-resolution Open Source Routing Machine (OSRM) servers calibrated specifically for Pakistan.

KEY CAPABILITIES
  • ✓Identifies access-controlled motorways (M-1 to M-16) vs National Highways (N-5 GT Road).
  • ✓Computes real driving distance down to the exact kilometer.
  • ✓Calculates expected travel duration accounting for legal speed limits (120 km/h motorways vs 80 km/h mountainous sections like Salt Range).
STEP 02: THE CAR02

Vehicle Physics & Fuel Burn

No two vehicles burn fuel identically. A 660cc Alto behaves completely differently from a 1.8L Civic or a 2.8L Fortuner on an incline.

KEY CAPABILITIES
  • ✓Select from 30+ verified Pakistani car models or input your vehicle's custom highway average.
  • ✓Air Conditioning Load Factor: Automatically factors in summer AC drag (-1.5 to -2.0 km/L) depending on your selection.
  • ✓Traffic Conditions: Weighs free-flow motorway cruising against stop-and-go urban approaches.
STEP 03: THE FUEL03

Live Petroleum Indexing

Fuel prices in Pakistan fluctuate on the 1st and 16th of every month. PlanDrivo continuously syncs with verified Oil & Gas Regulatory Authority (OGRA) notifications.

KEY CAPABILITIES
  • ✓Live official rates for Premier Euro 5 Petrol, Hi-Cetane Diesel, and Octane+ 97.
  • ✓Option to customize petrol rate manually if you filled up at a premium station or remote highway pump.
  • ✓Exact fuel litres required multiplied by the active rate for rupee-exact cost.
STEP 04: THE TOLLS04

Official NHA Toll Plazas

Motorway tolls can represent 25%–35% of your total trip expenditure. PlanDrivo maps every single toll plaza along your route from entry to exit.

KEY CAPABILITIES
  • ✓Official National Highway Authority (NHA) toll matrices for all active motorway corridors.
  • ✓Vehicle classification tariffs: Separate rates for Car/Jeep, Van/HiAce, Bus/Coaster, and Trucks.
  • ✓Toll amount added directly to your fuel total for a single, comprehensive trip estimate.
TRANSPARENT ALGORITHM

The formula behind your estimate.

No black boxes or hidden estimates. We show you the exact breakdown of how every single rupee is determined.

ESTIMATED TRIP COST EQUATION
Total Cost = (Distance ÷ Effective km/L × Live Fuel Rate) + Motorway Toll Plazas
01. Distance

Calculated along turn-by-turn motorway coordinates from OSRM GPS vectors.

02. Effective km/L

Base vehicle mileage adjusted for summer AC drag (-1.5 km/L) and passenger weight.

03. Fuel Rate

Synced bi-weekly with official OGRA price notifications for Petrol, Diesel, or Octane.

04. Motorway Tolls

Summed across all active M-Tag RFID toll gates encountered along the traversed route.

WORKED CASE STUDY

Example: Lahore to Islamabad on M-2 Motorway

Reference calculation for a standard 1300cc Sedan (14.5 km/L highway average) with petrol at Rs. 377.71 / Liter.

ROUTE DISTANCE378 kmvia M-2 Northbound
FUEL REQUIRED26.1 Litres378 km ÷ 14.5 km/L
PETROL COSTRs. 9,85826.1 L × Rs. 377.71
M-2 TOLL TAXRs. 1,430Official NHA Car Tariff
COMBINED TOTAL TRIP ESTIMATEFuel (Rs. 9,858) + M-Tag Toll (Rs. 1,430)
Rs. 11,288
CALCULATION FAQS

Frequently asked questions.

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