HomeMy Public PortalAboutEureka Federal Savings Improvements - 2600 South El Camino RealFinal Traffic Study
EUREKA FEDERAL SAVINGS PROJECT
El Camino Real Near 25th Avenue
City of San Mateo, California
Prepared for
CITY OF SAN MATEO
Department of Community Development
Planning` Division
By
BARNARD C. JOHNSON, P.E.
Traffic Engineering Consultant
January 25, 1979
Final Traffic Study
EUREKA FEDERAL SAVINGS PROJECT
• El Camino Real Near 25th Avenue
City of San Mateo, California
•
Prepared for
•
CITY OF SAN.MATEO
Department of Community Development
Planning Division
•
•
•
•
By
BARNARD C. JOHNSON, P.E.
Traffic Engineering Consultant
January 25, 1979
TABLE OF CONTENTS
TECHNICAL EVALUATION
Existing Conditions
Vehicle Trip Generation
Trip Distribution and Assignment
Traffic Impact Evaluation
CONCLUSION
APPENDICES:
Appendix A.
Appendix B.
Appendix C.
Appendix D.
Page
1
2
7
3
9
9
Level of Service Guidelines
Existing Level of Service
Weekday Hourly Volume Variation and
Vehicle Access Assignments
Report Author.
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Final Traffic Study
EUREKA FEDERAL SAVINGS PROJECT
El Camino Real Near 25th Avenue
City of San Mateo, California
This traffic study has focused on the proposed Planned
Development project by Eureka Federal Savings & Loan at the subject
• location. Residential, commercialand office uses are proposed for
the 46,544 square foot "L" -shaped lot fronting on El Camino Real
and on 26th Place.
This report includes tabulations to facilitate comparisons
• of the numerical values for existing and future land use and
traffic conditions. Definitions of traffic flow quality are
discussed in terms of level of service with existing conditions
as a base. The land use assumptions are essentially those exist-
ing today plus the proposed development.
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TECHNICAL EVALUATION
The study has been at a general level of detail and was
intended to provide an overview assessment of traffic impact of
the proposed development. The basic intent was to consider the
proposed development as a whole and evaluate the traffic conditions
for any possible adverse impacts. If so, it would be known early
in the City's project review process whether adverse elements
could be avoided and, the street system could operate in a safe
and efficient manner.
• Standard technical methodology has been used incorporating
the following elements:
• Description of existing condition
• Vehicle trip generation
• • Trip distribution and assignment
• Traffic impact evaluation
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The conclusions reached are based on an independent assessment of
• the study findings using conservative assumptions.
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Existing Conditions
Understanding the current operation of adjacent intersections
is necessary to evaluate the impact of new traffic on that inter-
section. This includes an awareness of the conditions experienced
by the general public while driving, walking, or observing the
intersection.
A further point of awareness in the evaluation is the rela-
tive degree of concern by the public. Tolerance levels are
different in the central business districts of urban street systems
(the El Camino Real Corridor in San Mateo,for example) than they
are for an outlying arterial, or for a local neighborhood street.
In very subjective terms, traffic volume impact might be equivalent
as viewed by abutting land owners (tenants). and by motorists for
the various classes of streets shown in Table 1.
TABLE 1. RELATIVE TRAFFIC VOLUME IMPACTS
Equivalent Levels of Concern
(Generalized)
VOLUME LEVEL OF
CLASSIFICATION (Vehicles Per Day) CONCERN
Local Street (2 Lanes) 500 Acceptable
• Collector Street (2-4 Lanes) 5,000 Acceptable
Arterial (4-6 Lanes) 20,000 Acceptable
In the Eureka Federal Savings (EFS) study area, there are
•' fluctuating volumes associated with residential and commerical land
uses. The project area is in a particularly sensitive location.
Commercial development depends upon easy vehicular access and high
volume levels. The local residential areas (on Edison Street and
• on 26th Place) are in the opposite category - the lower the traffic
volume in front of residences, the better.
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C o m m u t i n g a n d g e n e r a l c i r c u l a t i o n t h r o u g h o u t t h e d a y p r o d u c e
v a r y i n g d a i l y a n d p e a k - h o u r v o l u m e s . F o r e x a m p l e , T a b l e 2 s h o w s
t h e r e l a t i v e t r a f f i c v o l u m e c o u n t s i n t h e s t u d y a r e a .
T A B L E 2 . D A I L Y T R A F F I C V O L U M E S
" E s t i m a t e d a n d C o u n t e d
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D A I L Y V O L U M E
S T R E E T V e h i c l e s P e r D a y
E d i s o n S t r e e t
2 8 t h A v e n u e
2 7 t h A v e n u e
2 5 t h A v e n u e
E l C a m i n o R e a l
8 0 0
2 , 6 0 0
4 , 2 0 0
8 , 3 0 0
4 3 , 0 0 0
" E l C a m i n o R e a l i s a m a j o r a r t e r i a l t h a t o p e r a t e s a t c r i t i c a l
l e v e l s i n p e a k p e r i o d s . T h e s t r e e t i s v e r y s e n s i t i v e t o t r a f f i c
f l o w i r r e g u l a r i t i e s . T a b l e s 3 a n d 4 s h o w t h a t v o l u m e s a r e a t h i g h
l e v e l s a n d f a i r l y u n i f o r m t h r o u g h o u t t h e l a t e a f t e r n o o n p e a k p e r i o d .
A l s o , t h e v o l u m e s a r e s p r e a d o u t m u c h m o r e t h r o u g h o u t t h e d a y
( 7 A M - 7 P M a t 7 2 p e r c e n t ) a s c o m p a r e d w i t h a l o c a l s t r e e t l i k e
E d i s o n w h i c h p r o b a b l y h a s 8 5 - 9 0 p e r c e n t o f i t s t r a f f i c b e t w e e n
7 A M a n d 7 P M .
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T A B L E 3 . M A C H I N E T R A F F I C C O U N T S
E l C a m i n o R e a l
1 9 7 7 S t a t e T r a f f i c C e n s u s
L O C A T I O N *
P E A K A V E R A G E D A I L Y T R A F F I C
H O U R P e a k M o n t h A n n u a l
N o r t h o f H i l l s d a l e B l v d 3 , 6 0 0
S o u t h o f R o u t e 9 2 4 , 1 0 0
4 3 , 0 0 0
4 9 , 5 0 0
4 0 , 0 0 0
4 5 , 5 0 0
* C r o s s s t r e e t r e f e r e n c e
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TABLE 4. MACHINE TRAFFIC COUNTS
City of San Mateo, January 20, 1978,
Friday
El Camino Real - South of 27th Avenue
• DIRECTION
TIME
Southbound Northbound TOTAL
2 - 3 PM 1,379 1,532 2,911
3 - 4 1,461 1,471 2,932
• 4 - 5 1,629 1,457 3,086
5 - 6 1,720 1,340 3,060
6 - 7 1,195 1,152 2,347
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24 -Hour
20,001 22,654 42,655
12 -Hour
(% of 24 -Hour)
14,583
(73%)
16,029
(71%)
30,612
(72%)
Peak hour flows have been studied in detail at El Camino Real
• and 25th Avenue. An earlier traffic count by Caltrans has
supplemented the recent counts made for this study. Figure 1
shows the Friday evening peak hour turning movements for the
intersection.
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The intersection is relatively congested and was observed
operating at Level -of -Service "D" as shown in Table 5. Pedestrian
volumes were very light and did not adversely affect traffic flow.
Violations of the red signal display were observed regularly
indicating the amount of traffic "pressure" exerted at the
intersection.
Traffic volumes were sampled at 27th Avenue and El Camino
Real and observed for the other streets in the area.
The critical lane volume analysis for 25th Avenue and El
Camino Real is shown in Appendix B. The resulting critical lane
volume of 1,410 vehicles per hour can be compared with the guide-
• lines in Appendix A and shows the intersection to be operating
at Level -of -Service "D". This tolerable operating level has
developed over the last three years since 1975 with Level -of -
Service "C".
" 2 , 0 0 . 3
/ , 7 0 2
/ 4 2
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2 , 1 0 5
M i d d a y
` D a '