Start with the decision
A route is rarely the goal. People want to arrive on time, avoid uncertainty, understand a trade-off or recover when plans change. The strongest routing products begin with that decision rather than the line on the map.
Make trade-offs visible
Travel time, reliability, cost, accessibility and environmental impact can all change what “best” means. A useful interface exposes the few trade-offs that matter now and keeps technical complexity in reserve.
Design the recovery path
Trust is often won after something goes wrong. Product teams should treat missed turns, closures, poor signal and changing conditions as primary journeys, with calm explanations and obvious next actions.
Measure confidence, not taps
Completion rates matter, but so do hesitation, unnecessary route switching and the time it takes someone to understand a change. These signals reveal whether a navigation product is reducing uncertainty or simply moving it around.