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GROUP: transportation (tr)
DEFINITION: transportation. Roads, highways, etc.

Table of Contents


  1. Object
    1. local roads, paths, & access = includes all local roads, paths and access built for transport within local areas, with no high-speed (>65 km/h; 40 miles/h) sections.
    2. local highway = roads built for long-distance transport, mostly high-speed (>65 km/h; 40 miles/h), but often including intersections with full stops.
    3. railroad bed
    4. bridge (>2m) = transportation across water, with water surface underneath.
    5. high-speed highway = roads built for high-speed (>65 km/h; 40 miles/h) long distance transport that do not include intersections with full stops.
    6. overpass (>2m) = sealed transportation surface covering non-water features. These may include many types of features ranging from Constructed to Perennial.
  2. Modifier 1 (structure type)
    1. paths, roads & access
      1. unpaved = unimproved roads (local earth)
      2. paved = improved roads (sealed or filled with rock)
  3. Scale (of building footprint)
    1. local roads, paths, & access
      1. wide >2 m


  1. local roads, paths, & access
    1. unpaved
      1. wide >2 m = tr01
    2. paved
      1. wide > 2m = tr02
  2. local highway = tr03
  3. railroad bed = tr04
  4. bridge (>2m) = tr05
  5. high-speed highway = tr06
  6. overpass (>2m) = tr07

Dominance Rules

  1. IF TYPE with greater area is very similar or otherwise unclear:
    1. Choose unpaved over paved.
  2. IF paralleled by a <2 m irrigation feature, and unclear which has greater width or feature area:
    1. Choose transportation over irrigation.
  3. IF unclear whether a field border or other anthropogenic boundary or earthwork is used as a path (tr01) or is just a disturbed feature (significant vegetation growth, etc.):
    1. Choose disturbed & debris over transportation.


Leaf Type: none
Leaf Time: none
Tree Cover: <10%
Vegetation Cover: <10%
Height: 0m
IGBP_DIS: Urban and built-up
L1 Minimum: >2m linear, >5m polygon
L2 Minimum: >0.2m linear, >2m polygon

Compatible Classes







Sealed Bare soil


Mapped Ecotopes

ANCEtr01 ANCStr02 ANCStr03 ANCStr04 ANCStr05 ANCStr07  

Citation for AEM: Ellis E. C., H. Wang, H. Xiao, K. Peng, X. P. Liu, S. C. Li, H. Ouyang, X. Cheng, and L. Z. Yang. 2006. Measuring long-term ecological changes in densely populated landscapes using current and historical high resolution imagery. Remote Sensing of Environment 100(4):457-473.