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General

Legacy ID
16

Tribal HPP Program

The Tribal High Priority Projects (Tribal HPP) Program, as established under 23 U.S.C. 202, is a nationwide priority program for:

  1. An Indian Tribe or governmental subdivision of an Indian Tribe whose annual allocation of...

Cross Section Sheets (WFL)

Updated: 26-Oct-2022

This document contains examples Cross-Sections sheets including mainline, trail, and culvert.

Plan Profile Sheets (WFL)

Updated: 28-Jan 2026

This document contains sample WFL Plan Profile sheets and associated quantity tabulations (usually the D Sheets).

CFL File Naming Convention

There are many types of files in use at CFLHD.  Of utmost importance is the naming convention of the OpenRoads design files produced throughout a project.  The overall file naming convention is shown below, as well as types of files with extensions, used at CFLHD.  The convention...

Engineering Speed Management Countermeasures: A Desktop Reference of Potential Effectiveness in Reducing Crashes November 2023

Engineering Speed Management Countermeasures: A Desktop Reference of Potential Effectiveness in Reducing Crashes November 2023

Engineering Speed Management Countermeasures: A Desktop Reference of Potential Effectiveness in Reducing Crashes November 2023

November 2023

This chart summarizes studies about the effectiveness of engineering speed management countermeasures in different scenarios. Studies where an increase in crashes was reported are also shown since this information is relevant to selection of countermeasures. For the most current information on Crash Modification Factors (CMF), please go to the CMF Clearinghouse at:: http://www.cmfclearinghouse.org.