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Gradient Length (LOG)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: log.ttl

Name

gradientLength

Datatype

Real

Definition

The length of a road or railway segment having a significant gradient, specifically greater than or equal to 7 percent (%) for a road or greater than or equal to 3 percent (%) for a railway.

Accepted

2013-10-18

Defined by

DFDD

Physical quantity

length

Recommended unit

Metre (m)

Used by

• AN050 Railway Sidetrack
• AN010 Railway
• AP075 Land Transportation Way
• AQ120 Steep Grade

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.