Railroads

Rail transport systems using guided tracks and trains, with public steam railways scaling freight and passenger movement from the 1820s.

Core metadata

Prerequisites

Dependents

Fields

Field lanes

Node sources

Prerequisite edge evidence

Edge/source evidence summary:

Prerequisite Type Confidence Evidence level Note Sources
Steam Engine (steam_engine) required 86% textbook The 1825 Stockton & Darlington scope is specifically a public steam railway, so steam locomotion is core to this node.
Steel Production (steel_production) commercial_or_scaling_dependency 56% expert_inference Steel rails improved later railway durability and scale; early railways did not require modern steel production.
Surveying (surveying) enabling 68% expert_inference Route alignment and gradients made surveying important for practical railway construction.

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