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Stories & Guides

Bus history, model deep-dives, mod news and hands-on install guides for Proton Bus Simulator — written by the Proton Bus Research Team behind the catalog.

An Ikarus 280 articulated city bus, the 16.5-metre two-section icon of the 200 series

What Ikarus Bus Numbers Mean: Decoding the 200 Series

250, 260, 280 — they look like random three-digit codes. They aren't. Here's how to read an Ikarus by its number, body type by body type.

Proton Bus Mods Research Team Jun 14, 2026 8 min read

A preserved Mercedes-Benz O 321 — the 1954 semi-integral design that replaced the bus's truck frame with a load-bearing body.

Mercedes-Benz Buses: The Chassis That Built the Modern Bus

How a single 1954 design killed the truck-frame bus, how that idea crossed the Atlantic and became the OH and OF chassis families half of South America still rides on, and where the line goes electric.

Proton Bus Mods Research Team Jun 13, 2026 9 min read