Friday, 30 October 2026

How Dropped Pace Notes Alter High-Speed Decisions on a Rally Stage

A Toyota GR Yaris Rally1 World Rally Championship car navigates a sunlit gravel stage, kicking up a large plume of dust along a track bordered by trees and roadside fencing.

The Sudden Loss of Cockpit Guidance

Rally crews rely on continuous instructions from the co-driver to commit to blind crests and hidden corners at competition speeds. When an impact interrupts that communication flow, the dynamic inside the car shifts immediately from anticipatory driving to cautious reaction. On the opening Cambyreta stage of Rally del Paraguay, M-Sport Ford driver Josh McErlean faced this exact scenario when co-driver Eoin Treacy lost grip of his pacenote book following a harsh landing over a jump. With roughly 400 metres remaining before the upcoming junction, the sudden cockpit vacuum forced the crew to regroup quickly while visual sightlines dictated their speed.

The Cost of Running Blind

Navigating sudden disruptions like WRC lost pace notes leaves drivers unable to trust the road profile ahead, requiring earlier braking and deliberate speed reductions to avoid catastrophic mistakes. While the distance ahead of the junction in Paraguay allowed McErlean and Treacy enough time to collect their composure, missing road information consistently damages competitive pace. At the 2026 edition of Rally Japan, Takamoto Katsuta lost 25.9 seconds on stage two after dealing with missing pacenote details following an opening-stage puncture, illustrating how quickly stage times deteriorate when a crew loses their detailed roadmap.

Official reference: FIA World Rally Championship regulations.

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