TPP Standard Sheets
Skip to main content
Texas Department of Transportation
Connecting You With Texas
  • Family
  • Jobs
  • Education
  • Opportunities
  • Attractions
  • Entertainment
  • Wide Open Spaces
  • History
  • Quality of Life
  • Sports
  • Parks
  • Shopping
  • Services
  • People
  • Wildflowers
  • BBQ
  • Shores
  • Schools
  • Rodeos
  • Music
  • Tacos
  • Adventure
  • Trails
  • Traditions
  • Safely
  • Sunsets
  • Culture
  • Festivals
  • Friends
  • Life
  • Possibilities
  • Legends


The Transportation Planning and Programming Division developed standard sheets for Traffic Data Collection site installations and repairs. These sheets should be considered for major pavement construction projects in truck corridors and construction or maintenance projects impacting existing traffic data collection sites.  

  • TDC-1 – Layouts and general notes for in-road sensors and loops for Weigh-In-Motion (WIM)
  • TDC-2 – Layouts and general notes for in-road sensors and loops for Vehicle Classification (VC)
  • TDC-3 – Traffic Data Collection specific loop details to supplement standard sheet LD(1)

For assistance and additional information, please contact Catherine Wolff at 512-968-2192.

TxDOT provides computer aided drawing standard plan files. Good quality printed versions of the files may be used in plan sets without being signed and sealed by a licensed engineer.

CAD Standard Plan Files

Files are maintained by the TxDOT division or district identified in the plan title block.

  • Statewide files can be used for jobs across the state.
  • District files are modified statewide files or are developed exclusively for use in the district.

Modifying Standard Files

If you need to modify a standard file for a specific job, you must do the following:

  • Document and date in the revision block of the sheet.
  • Append the standard plan name inside the title block with (MOD).
  • A licensed engineer must sign and seal each modified standard file.

Download CAD Standard Plan Files

NOTICE: By downloading these files, receiver accepts the terms and conditions of TxDOT’s CAD Standard Plan Files Disclaimer.




Copyright 2022  •  Texas Department of Transportation  •  All Rights Reserved  •  Disclaimer  •  Privacy & Security Policy  •  Accessibility
125 East 11th Street  •  Austin, Texas 78701