HomeMy WebLinkAboutNB 2A STOP WARR. STDY 10-20-82DATE: OCTOBER 13, 1982
TO:
THRU:
FROH:
SUBJECT:
BILL HUSTON, CITY MANAGER
BOB LEDENDECKER, DIRECTOR OF PUBLIC WORKS/CITY ENGINEER
NORM HOWER, TRAFFIC ENGINEER
STOP WARRANT STUDY - MAIN STREET AND "B" STREET
As requested, the intersection of Main Street and "B" Street has
been studied in regards to meeting the standard warrants for a
four-way stop installation.
This intersection does not meet the volume Warrants for a
four-way stop installat~ for any hour of the day. It also has
not met the accident warrants and has good visibility in all
directions.
There is existing stop control for "B" Street at Main Street and
it is recommended that this remain. It is also,recommended that
stop control not be installed on Main Street at "B" Street, since
it does not meet the standard warrants.
· ORM HO~ER
TRAFF, IC ENGINEER
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Attachment
INTERSECTION VOLUMES
MAIN STREET AND "B" STREET
MAIN STREET "B" STREET
EAST WEST NORTH SOUTH INTERSECTION
TIME BOUND BOUND TOTAL BOUND BOUND TOTAL TOTAL
12:00- 1:00 AM 36 31 67 3 3 6 73
1:00- 2:00 13 13 26 1 3 4 30
2:00- 3:00 7 9 16 0 0 0 16
3:00- 4:00 4 4 8 O 1 I 9
4:00- 5:00 3 2 5 1 i 2 7
5:00- 6:00 10 2 12 2 5 7 19
6:00- 7:00 69 23 92 11 47 58 150
7:00- 8:00 230 126 356 16 68 84 440
8:00- 9:00 261 352 613 17 43 60 673
9:00-10:00 187 148 335 39 39 78 413
10:00-11:00 221 155 376 39 42 81 457
11:00-12:00 239 179 418 65 81 146 564
12:00- 1:00 PM 336 278 614 64 75 139 753
1:00- 2:00 253 301 554 71 67 133 687
2:00- 3:00 262 228 490 60 50 110 600
3:00- 4:00 344 309 653 49 51 100 753
4:00- 5:00 406 300 706 69 58 127 833
5:00- 6:00 508 430 938 75 40 115 1053
6:00- 7:00 318 314 632 29 33 62 694
7:00- 8:00 173 202 375 15 16 31 406
8:00- 9:00 93 136 229 17 14 31 260
9:00-10:00 66 93 159 8 7 15 174
10:00-11:00 62 72 134 3 2 5 139
11:00-12:00 47 47 94 0 3 3 97
TOTALS 4,148 3,754 7,902 654 744 1,398 9,300
This intersection does not meet the warrants for stop control for any hour
of the day.
STANDARD WARRANTS FOR 4-WAY STOP CONTROL
IN USE BY: U.S. Department of Transportation
State of California
Any of the following conditions ma~ warrant a four-way stop sign
installation:
Where traffic signals are warranted and the need is
urgent, the four-way stop can be used as an interim
measure until a traffic signal can be installed.
An accident problem, as indicated by five or more reported
accidents of a type susceptible of correction by a four-way
stop installation in a 12-month period. Types of accidents
susceptible of correction include right angle and left
turn collisions.
3~ Minimum volume warrant:
a o
The total vehicular volume entering the intersection
from all approaches must average at least 500 vehicles
per hour for any eight hours of an average day, and
bo
The combined vehicular and pedestrian vclume from
the minor street or highway must average at least
200 units per hour for the same eight hours with an
average delay to minor street vehicular traffic of
at least 30 seconds per vehicle during the maximum
hour.
c. When the 85-percentile approach speed of the major
street traffic exceeds 40 miles per hour, the
minimum vehicular volume warrant is 70 percent of
the above requirements.
At a "T" intersection (3-way) a minimum vehicular volume of 75 percent
may be used. (Total vehicular volume of 375, minor street volume of
150.)
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