Traffic safety improvement study, WO No. 91-06

416 Pages·1992·19.7 MB·English

by  Marvin & Associates

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TRAFFIC SAFETY
IMPROVEMENT STUDY
WO
No. 91-06
CITY OF BILLINGS
PREPARED BY
MARVIN & ASSOCIATES
k Traffic, Transportation &Civil Engineers
MONTANASTATE LIBRARY
S625.7042B12tsis1992?c.1v.1
Trafficsafetyimprovementstudy,WONo.
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TRAFFIC SAFETY
IMPROVEMENT STUDY
WO
No. 91=06
PREPARED FOR
CITY OF BILLINGS
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1
MAY 1 5 1992
.MONTANA STmATE LIBRARY
PREPARED BY
1515 E. AVE.
HELENA, MONTANA 59620
MARVIN & ASSOCIATES
1127 ALDERSON AVE. 3204
BILLINGS, MT 59102
AND
ENGINEERING
INC.
Digitized by the Internet Archive
2014
in
https://archive.org/details/trafficsafetyimp1992marv
CITY OF BILLINGS
STUDY REFERENCE SHEET
&
Study Purpose Objective:
To identify the twenty five most hazardous traffic locations not on the Federal Aid Street System within the City
of Billings; perform data collection and analysis according to FHWA-RD-77-83 Methods: evaluate and
recommend improvements; prioritize the sites; and prepare a report to be submitted to MDoT for funding
through Off-System Safety funds.
Study Cost $25,000.00
Study Funding: Montana Department of Justice - 100%
Contract Time: 120 I>ays
Notice to Proceed Date: October 1. 1991
Date Completed: March 3, 1991

TABLE OF CONTENTS
PAGE
INTRODUCTION
Study Purpose
1
Report Organization 2
SITE CHARACTERISTICS
Site Locations 4
System Characteristics 6
STUDY METHODOLOGY
14
HAZARD INDEX ANALYSIS RESULTS 17
HAZARD RANKING 29
EXPLAINATION OF IMPROVEMENTS 31
BENEFIT/COST RAl.OS 33
PRIORITY INDEX 37
IMPLEMENTATION 40
STREET CORRIDORS
Lewis Avenue 42
N. 30th Street 44
PROGRAM CONTINUATION 47
REPORT FIGURES 48
SITE ANALYSIS (See Site Sections 1 Thru 25)

LIST OF FIGURES
Page
Figure 1. Site Location Map 5
Figure 2. Historical Factors 6
Figure 3. Monthly Traffic Variations 7
Figure 4. Daily Traffic Variations 8
Figure 5. Hourly Traffic Variations 9
HAZARD INDICATOR VALUES 46
Figure 6. Number of Accidents Indicator
Figure 7. Accident Rate Indicator
Figure 8. Severity Indicator
Figure 9. V/C Ratio Indicator
Figure 10. Sight Distance Indicator
Figure 11. Driver Expectancy Indicator
Figure 12 Information Deficiency Indicator
Figure 13. Benefit/Cost Ratio Indicator