Advanced Traffic Management System - Deprecated Files

Description

These Advanced Traffic Management System files listed below are deprecated and should not be used for new software development. Support and documentation for these feeds is limited. Please use these feeds to retrieve traffic data only. The Department has a fully documented set of CCTV and CMS feeds located at the CWWP2 website.

Conditions of Use

Please read the Conditions Of Use before using these data sets.

Announcements

October 20, 2020 : On November 9, 2020 Caltrans will be migrating the Caltrans Wholesale Website Portal Version 2 (CWWP2) to the HTTPS protocol from the HTTP protocol. HTTP will be available until November 9th, 2020 and will be redirected to HTTPS thereafter. HTTPS will not be available until after the transition on November 9th, 2020. Please update your clients and applications that utilize the CWWP2 as necessary to accommodate this important change.

Documentation

Data in each of these file formats are defined in the following documents:

Webupdate / Webinit Formats - Describes data layout for format

File Locations

Data sets are broken up by Caltrans Districts.

Webupdate Format

ATMS webupdate.txt files available by district, file update frequency, file url and comments
District	File Update Frequency	File URL
7	once a minute	https://cwwp2.dot.ca.gov/data/d7/atms/webupdate.txt
8	10 minutes	https://cwwp2.dot.ca.gov/data/d8/atms/webupdate.txt
11	once a minute	https://cwwp2.dot.ca.gov/data/d11/atms/webupdate.txt
12	once a minute	https://cwwp2.dot.ca.gov/data/d12/atms/webupdate.txt

Webinit Format

ATMS webinit.txt files available by district, file update frequency, file url and comments
District	File Update Frequency	File URL
7	once a minute	https://cwwp2.dot.ca.gov/data/d7/atms/webinit.txt
8	10 minutes	https://cwwp2.dot.ca.gov/data/d8/atms/webinit.txt
11	once a minute	https://cwwp2.dot.ca.gov/data/d11/atms/webinit.txt
12	1440 minutes	https://cwwp2.dot.ca.gov/data/d12/atms/webinit.txt