Driverless Cars Could Pose Danger to Runners, Study Finds

Why It Matters

The findings highlight a safety gap for a growing class of active commuters, urging automakers and regulators to redesign AV signaling for high‑speed pedestrians. Ignoring this risk could lead to accidents and hinder public acceptance of driverless technology.

Key Takeaways

• Runners crashed three times; walkers none
• AR test used 24 participants, walking vs running
• Red/green or moving blue lights served as eHMIs
• Researchers propose DualBeam colour cues for clearer communication
• Wearable alerts could warn runners without slowing

Pulse Analysis

As autonomous vehicles (AVs) become commonplace, their interaction with vulnerable road users is under intense scrutiny. Most safety standards focus on pedestrians and cyclists, assuming a relatively slow pace of movement. However, the Glasgow‑KAIST study reveals that runners, who often maintain speeds of 8‑12 mph, process external cues differently, making split‑second decisions that can bypass traditional visual signals. This behavioral nuance forces a reevaluation of how AVs convey intent, especially in urban environments where joggers share sidewalks and crosswalks.

External Human‑Machine Interfaces (eHMIs) are the visual language of driverless cars, replacing eye contact and hand gestures. The research tested simple red/green lights and a dynamic blue indicator, yet runners still misread or ignored them, leading to collisions. Industry experts suggest that a more intuitive system—such as the proposed DualBeam, which pairs distinct colour cues with clear stop/go semantics—could bridge the perception gap. Moreover, integrating vehicle‑to‑pedestrian (V2P) communication via Bluetooth or 5G could push alerts directly to smartwatches or earbuds, delivering real‑time warnings without forcing runners to glance down.

Regulators and manufacturers must now consider these findings when drafting AV safety protocols. Incorporating dynamic eHMIs and wearable alerts could become mandatory in jurisdictions that promote active transportation. By addressing the unique risk profile of runners, the autonomous fleet can enhance overall road safety, bolster public confidence, and avoid costly liability issues as driverless cars roll out across cities worldwide.