How it works — what's actually happening when you analyze a trip

This page explains how the TripCaptain weather road trip planner works: how it chooses a safe departure window, how the trip safety score turns the forecast into a single number, and how the EV cold weather range calculator gives you your real winter range.

Best time to leave — the 48-hour departure window

TripCaptain reads the weather across the next 48 hours along your whole route and surfaces the calmest departure windows — bands of hours that share a similar risk profile — folding every stop into one verdict so you can see whether to go, wait, or prepare.

How the Hazard Score™ works — the whole drive in one number

The Hazard Score™ turns the full forecast along every segment of your drive into a single 0–100 route score where higher means safer, the way a test grade reads. It then adjusts for your vehicle — a high-profile van is more exposed to crosswind, a motorcycle to rain and cold, an EV to sub-zero range loss — so the same forecast reads differently for a different drive.

EV cold weather range calculator

Your dashboard's rated range assumes ideal conditions. TripCaptain gives you the real winter range for your actual route and the day's weather, then places charging stops with a safety margin — including when pre-conditioning the battery is worth the time.

Plan a trip · EV trip planner · Full guide · Live road conditions