Caltrans highway design manual traffic index

The 7th Edition Highway Design Manual (HDM) establishes uniform policies and procedures to carry out the state highway design functions of the California Department of Transportation. Refer to the "Foreword" section of the HDM for more information. HIGHWAY DESIGN MANUAL February 1, Topic - General Planning Criteria Introduction The needs of non-motorized transportation must be considered on all highway projects. Topic discusses Pedestrian Facilities with Index addressing accessibility needs. This chapter discusses bicycle travel. STREET DESIGN Traffic Index (TI) Determination The following information is to be used to determine the traffic index for a road segment: 1. Truck Percentages: Table A lists the minimum truck percentages that shall be used in determining traffic indices when truck percentage data is not available.

To calculate the design Traffic Index for a year design, begin by subtracting the design year’s cumulative ESALs (furthest right column) from the same column 20 years later. Shorter term analysis will require the design year’s ESALs be subtracted from the corresponding design period, cumulative ESALs. ESALs shown are in thousands. The 7th Edition Highway Design Manual (HDM) establishes uniform policies and procedures to carry out the state highway design functions of the California Department of Transportation. Refer to the "Foreword" section of the HDM for more information. When a chapter is updated, the date on the header of the updated pages is changed and a vertical. Highway Design Manual July 1, (h) Section - – Caltrans and local agencies to develop design criteria and symbols for signs, markers, and traffic control devices for bikeways and roadways where bicycle travel is permitted. (i) Section – Local agencies must comply with design criteria and uniform symbols.

1 Jan Third Street * 2nd Floor * Napa, California will be based on Caltrans design procedures using the traffic index and the. Figure 2 – House Count to Traffic Index Conversion. Caltrans Highway Design Manual, and based on the R-value of the underlying material and the traffic. Drafting Standards for Construction Plans and Cross. Sections TRAFFIC CHARACTERISTICS AND HIGHWAY CAPACITY by a finger indicator next to it.