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Section 4: Left/Right Mainlane Attributes

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Median Width and Type Data

Median Width and Median Type are the two left and right mainlane pavement attributes. Due to roadbed classification constraints, you cannot input Median Width at the same time as any other pavement attributes. The system compares the value of the Median Width input to the other pavement width attributes stored in TRM to ensure that all meet the pavement width requirements:

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Definitions

Median—The portion of a divided highway separating opposing traffic.

Median Type Value—Description of the non-driveable separation between the left and right mainlane roadbeds.

NOTE: If curbs and a positive barrier are in place, then positive barrier (value 2) has precedence:

Anchor: #i1005233Median Type Values

TRM Values

Median Types

HPMS Equivalent

1

Curbed

1

2

Positive Barrier

2

3

Unprotected

3

4

One-way pair

4


Median Width—The measurement of the width of the median not including the shoulder or any driveable area outside the median:

Median Width. (click in image to see full-size image) Anchor: #i1000125grtop

Figure 10-2. Median Width.

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Input—Left/Right Mainlane Attributes

Follow these input instructions to update median attribute values:

Anchor: #i1005257Update Median Attribute Value

Step

Action

Input

1

(For instructions to log onto the system, click this link)

From the District Database Maintenance Menu, select Update-Code 13H and press <E>; the TPP Maintenance Submenu screen appears

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2

Input Location Key fields

3

Input Median fields and press <F2>; the system updates TRM with the new median information and displays the verification message “Transaction completed successfully”

  • Median Width in feet
    • If Median Type is 1, 2, or 3, Median Width is 001 to 999
    • If Median Type is 4, Median Width is 000
  • Median Type (If more than one Median Type exists within a given range, select the sequentially lower type. Example: If types 2 and 3 exist, input 2)

4

To input another Update-Code, press <F3> to exit back to the TPP Database Maintenance Menu

To exit back to the TRM Main Menu, press <F10>

(For instructions to log off the system, click this link)

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