Show Map
  • Added 21 Sep 2016
  • Updated 28 Aug 2018

The Federal Motor Carrier Safety Administration (FMCSA) Hazardous Material Routes were developed using the 2004 First Edition TIGER/Line files. The routes are described in the National Hazardous Material Route Registry (NMHRR). The on-line NMHRR linkage is hazmat.fmcsa.dot.gov/nhmrr/index.asp With the exception of 13 features that were not identified with the Tiger/Lines, Hazmat routes were created by extracting the TIGER/Line segments that corresponded to each individual route. Hazmat routes in the NTAD, are organized into 3 database files, hazmat.shp, hmroutes.dbf, and hmstcnty.dbf. Each record in each database represents a unique Tiger/Line segment. These Tiger/Line segments are grouped into routes identified as character strings in the ROUTE_ID field in the hmroutes.dbf table. The route name appearing in the ROUTE_ID is assigned by FMCSA and is unique for each State [this sentence could be deleted - it doesn't add a lot to it]. The hmstcnty.dbf table allows the user to select routes by State and County. A single shapefile, called hazmat.shp, represents geometry for all routes in the United States.

This layer is sourced from maps.bts.dot.gov.

Information

Copyright Copyright may apply. Please check the source for more information.
RegionsUnited States of America

Technical Details

Layer ID 22794
Data type Vector linestring
Feature count 145005
Attributes Shape_Length, FENAME, FETYPE, TLID, FEDIRP, CFCC, FEDIRS, PK
Services Vector Query API, Web Feature Service (WFS)

History

SourceNone
Added 21 Sep 2016 ago
Last checked 5 Sep 2018 ago
Show Map