Developer builds AI agent to navigate Romania, Hungary, Austria vignette rules

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A developer has launched Drum Bun, a free AI-powered travel planning agent designed to help drivers navigate complex and recently updated vignette requirements for road trips between Romania, Germany, and Austria. Romania replaced its rovinietă system on 1 October 2026 with a new operator called TollRo and revised pricing, while Hungary introduced a regional M1 vignette in 2026 that can significantly cut crossing costs. Austria now sells only digital vignettes and has raised its on-the-spot penalty to €200, with 2027 prices still unpublished. The tool calculates the cheapest combination of vignette products for a user's specific dates and vehicle class, and also flags outdated information commonly found in blog posts. Drum Bun supports queries in Romanian, German, Hungarian, and English, and traces every answer back to an official source.

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