The Union Cycliste Internationale (UCI) has approved a new regulation that will limit the maximum size of cycling GPS computers used in sanctioned competition beginning January 1, 2028. The rule establishes a maximum device footprint of 126 × 71 mm, effectively capping future development of oversized cycling computers while allowing all current mainstream products to remain compliant.
The decision reflects growing discussions within professional cycling about the role of onboard electronics, rider attention management, and the increasing amount of real time data available during races.
New GPS Size Limit
Under the updated regulation, cycling computers larger than 126 mm in length and 71 mm in width will no longer be permitted in UCI competition.
The dimensions closely match the largest bike computers currently available on the market, including flagship models from major manufacturers. As a result, the new rule is not expected to affect existing products but could influence future hardware development strategies.
For manufacturers, the regulation effectively creates a defined upper boundary for display size, housing dimensions, and integrated cockpit designs intended for professional racing applications.
Focus on Rider Information Load
According to the UCI, the primary motivation behind the rule is the potential impact of large displays and expanding data availability on rider cognitive workload.
Modern cycling computers provide riders with an extensive range of information, including:
- Speed and distance.
- Power output.
- Heart rate.
- Cadence.
- Navigation data.
- Performance metrics.
- Team strategy information.
- Real time race analytics.
The governing body argues that increasing access to data during competition could contribute to rider distraction and potentially elevate accident risk in high speed racing environments.
While no specific device or manufacturer was targeted, the rule appears designed to prevent the emergence of increasingly larger displays that could further expand the amount of information presented to riders during competition.
Technical Impact on Manufacturers
From a technical perspective, the regulation is unlikely to affect current product portfolios from major cycling electronics brands.
Most premium cycling computers remain comfortably below the new dimensional threshold, even as screen sizes have grown significantly over the past decade.
The more significant impact may be on future innovation. Manufacturers exploring ultra large displays, integrated cockpit computers, or multifunction navigation systems will now need to ensure that new designs remain within UCI dimensional requirements if they wish to maintain eligibility for professional racing.
This creates a clear design framework while preserving flexibility for improvements in display quality, processing power, battery life, mapping capabilities, and connectivity.
Larger Screens Do Not Automatically Increase Rider Distraction
The practical impact of the rule will likely be limited in the near term because the maximum dimensions exceed the size of most devices currently used in professional cycling.
From a navigation and human machine interface perspective, larger displays can offer advantages by making critical information easier to read with shorter glance times. As a result, the relationship between screen size and rider safety remains more complex than a simple dimensional limit suggests.
What the new regulation clearly accomplishes is establishing a boundary before cycling computers evolve into significantly larger cockpit mounted information systems. Whether the change meaningfully affects rider safety will depend less on physical size and more on how future devices present information and interact with riders during competition.
About the UCI
Founded in 1900 and headquartered in Switzerland, the UCI serves as the global governing body for competitive cycling. The organization oversees disciplines including road cycling, track cycling, mountain biking, BMX, cyclocross, and esports cycling, while establishing the technical regulations used in international competition.
