traffic control study albert/norton 3/5/1976March 5, 1976
TO: Norris Olson, City Manager
FROM: . D. W. Bassett, Traffic Engineer
SUBJECT: Study for traffic control at the intersection of Albert Avenue
and Norton Street
This office has conducted a study of the above intersection consisting
of the following:
1), 24-hour .traffic count of Quincy Street, Norton Street and
Albert Avenue;
2) Peak hour traffic count at Norton Street and Albert Avenue -
7:40 - 8:10;
3) Peak hour traffic count at'Norton Street and Albert Avenue -
12:00 - 1:00;
4) Peak hour traffic count at Norton Street and Albert Avenue -
3:00 - 4:00;
5) Collision diagram;
6 Intersection control analysis;
7 Safe stopping distance chart;
8 Clear site distance chart;
9 Intersection geometries;
10 Intersection geometries.
The average daily traffic (ADT) on Roach Street is 1,990 vehicles,
1,420 on Quincy Street and 314 on Norton Street.
We took a hand count at Norton Street and Albert Avenue showing traffic
volume and turning movements for these three peak hours of the day. The
total traffic enteringthis intersection during the peak hour is around 60
vehicles, which is quite typical for a.residential intersection.
We checked the'accident records.at this location and found that in
1973 and 1974 there were no accidents. There was one accident in 1975 and
two in 1976. With the two accidents being so close together, it made us
think that something had recently changed in the area that might be causing
these accidents. The accidents were the same type but from different approaches.
Of the six vehicles involved in the three accidents, two approached the inter-
section from the south, two from the east, one from the west, and one from the
north. Of the six drivers involved, there were three males and three females
ranging in age from 16 to 71. All three accidents were in the afternoon between
2:00 P.M. and 5:00 P.M. We couldn't find any recent changes in the area that
might have been the cause of these accidents. Also, there seemed to be no
pattern establiahed:by.any of, these accidents.
Norris Olson,
Page 2
March 5, 1976
City Manager
I received a call from Mr. Rod Dazeisen who lives at 2080 Norton Street
and from Mr. Dick Wilson who lives on Raymond Street and they both expressed
their concern for the safety at this intersection. They both felt that
speeding was at least part of the problem. During our study we did not find
any speeding, at least not exceeding the 30 m,p.h, speed limit.
The attached intersection control analysis shows that due to the safe
stopping distance at this location, that this is a Class II intersection
and has a warrant for yield signs on the Norton Street side of the inter-
section. This is a real concern because we have several hundred intersections
in the City that are very similar to this one that do not have any traffic
control. It appears that our present building front and side yard setback
requirements are not compatible with our present 30 m.p.h. speed limit in
residential areas. Sheet no. 8 shows that.a 25 foot front setback on a
building and a 7.5 foot side yard requirement, limits the safe approach
speed to 21.8 m.p.h.
In view of these facts, we hesitate to recommend the installation of
-any traffic control at this location unless Albert Avenue from Roach Street
to Quincy Street is designated as a through street. In the event that this
occurs, the -traffic control should be stop signs installed on Norton Street
at Albert Avenue. This change will probably cause an increase of traffic
volume and speed on Albert Avenue between Quincy Street and Roach Street.
City Code - Section 22-54. Signs required at through street
intersections; manager to erect.
Whenever any resolution of the board of commissioners designates
and describes a through street, it shall be the duty of the city
manager to place and maintain a stop sign on each and every street
Intersecting such through street or that portion thereof described
and designated as such by an ordinance of the city. (Code 1960,
17-405)
If there is any further information or study needed, please advise.
Respectfully submitted,
0: W. Bassett
DWB:MKP
CC: D. Boyer
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'INTERSECTION
VOLUMES
SALINA, KANSAS
.DATE e 7/1 776
TIME 7=40 fo B10 A Tl .
d;
0
0
O
----------------
5
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Vt
161 d
APPROACH VOLUME
TRAFFIC ENGINEER
SALINA KANSAS
- APPROACH
VOLUME PERCENT
LT.
RT. THROUGH
NORTH
(p
... :. EAST
i z
SOUTH/S
" WEST
TOTAL
3 I ..vim h
50 /77/x7, neY)�G1� z
APPROACH VOLUME
V
APPROACH VOLUME PERCENT
LT. RT. THROUGH
NORTH
EAST
SOUTH 7
WEST i
TOTAL
TRAFFIC ENGINEER
SALINA KANSAS
"MTpt5EGT101V V01.4M'ES
/Z
Z3
n
APPROACH VOLUME I
APPROACH VOLUME PERCENT IL
LT. RT. THROUGH
NORTH
EAST / Z
SOUTH . 1 3
WEST Z �p
TOTAL
M
TRAFFIC ENGINEER
SALINA KANSAS
0
m
:NAME lot
�a
�kj_
COLLISION DIAGRAM -
TYPES OF COLLI:
INTERSECTION er 7�- and o
REAR END
PERIOD' 3 ,�, t : from /9i3 to /�.r€SQV7-
.
ACCIDENT CAUSES
ACCIDENTS By TYPE
=
F.toY. -Failed to viefd - ,3
F.toS. -Failed to Stow - -
F.toRS-Faifedto Reduce Speed -
F.too C.- bIlowi� g too Close -
StooF.-Speed too Fast -
RD. -Reckless Driving,. -
1-7. -improper Turn -
LP. -Improper Passing -
I.C.L. -Improper Lana Changing-
1.S.-MProPer Signal -
.DaIW.-Dozed atWheel-
yQWS.RrOn Wrong Side at Rood -
-
TYPE
DAY
NIGHT
TO'
Fatal
O
LEFT TURN
O
In dd
ury
o INJURY ACCIDENT
Other
In ur
0
1
Property
Damage
Only g
Z
C
Total
S onWFSkidded an Wet Pavement -
San 1. -Skidded on Ice -
D.W.I. -Driving While Intoxicated-
f.D. - Inattentive Driving
MF. -Medumieal Failure -
MBR. -Hit B Run -
-Other
Total11\3
GINDICATE NORTH BY ARR
0
m
:NAME lot
�a
�kj_
750
�o y �g000,00
SHOW FOR EACH
ACCIDENT
I. TIME and DATE
2.CAUSE of ACCIDENT
3 -PROPERTY DAMAGE (COST)
SYMBOLS
TYPES OF COLLI:
'a-'-- MOVING VEHICLE
REAR END
-P-» BACKING VEHICLE
—+•-- HEAD ON
qg--- NON-INVOLVED VEHICLE
Xr-- - PEDESTRIAN
SIDE SWIPE
PARKED VEHICLE
4bswelw OUT CONTROL
Q FIXED OBJECT
LEFT TURN
® FATAL ACCIDENT
o INJURY ACCIDENT
RIGHT ANGLE
750
�o y �g000,00
SHOW FOR EACH
ACCIDENT
I. TIME and DATE
2.CAUSE of ACCIDENT
3 -PROPERTY DAMAGE (COST)
i 1
INTERSECTION CONTROL ANALYSIS DATA SHEET
/MAJOR ST. SEC ST.
STREET 1 ®.
2
3
IRAQI Mmmw1k7m-4
®®®_
• • • • • yt
DnRKTNr
I�
••.
CLASS
DESCRIPTION OF
SIGHT OBSTRUCTION
IF CLASS III OR IV
I
NO CARS BUT
EVIDENCE
• •
W
a
Nous
X
31
1
b
Y
32
Z
a
See C�
t
s■���►�►���®
b
7.2
L3
a
b
ee�ieee--•—
VTCTRTT.TTV
QUAD-
RANT
CLASS
DESCRIPTION OF
SIGHT OBSTRUCTION
IF CLASS III OR IV
I
II III
IV
W
a
Nous
X
31
1
b
Y
32
Z
a
See C�
VOLUME AND WIDTHS
STREET
PROACH
24 -HR.
VOLUME
PEAK HR.
VOLUME
VOLUME
WIDTHS
PVMT
ROW
a
31
1
b
32
a
t
2
b
7.2
L3
a
b
NEIGHBORHOOD:
Residential
Good__
Fair
Poor
industrial
Good
Fair
Poor
Other
Good
Fair
Poor
Near School (Less
than 3 blocks)
Yes
No.::�
Comments
LO
i�
Safe Stopping uistance
SSD=Reaction Distance+ Braking Distance CD
SSD=1.47V(t) + V + CD
3 +g
V=Speed of vehicle "
t =Reaction lime (•51.5 sec.)
f =Friction factor(•5 avg.).
g = %Grade .
CD =Constant Clearance Distance (151
SSD=70ft. (20 M.PH. limit
SSD=90ft. (25 M.PH. limit
SSD =1
SSD90ft. 40 M.P.H. limit
E
Approach
Speed Limit Ove'r45° 30°to45° 150to300 I Less -150
20 M.PH. 20 M.PH.+ 13-19M.PH. - M . H -
Class I - No Control
Class II —Yield Sign
Class III - 2 -Way Stop -Yield Sign
Class IV -4 -Way Stop • 2 -Way Stop
60'
swig: 1130,
SHADED AREA EXIST. 60' CLEAR SIGHT ZONE
AVE. m
Drive
ALBERT
AVE.
B. B.