Campbell-Grant Traffic Management Report for Water Street
in the Campbell-Grant Neighborhood
You may need
to hover your pointer to get an expand button to appear on these
images. |
Purpose
The purpose of this report is to analyze the existing traffic pattern
in the southern portion of the Campbell- Grant Neighborhood, bounded
by Copper Street, Grant Road, Campbell Avenue, and Tucson Boulevard.
This analysis will investigate the volume and speed of vehicles traveling
in the neighborhood.
Background
On June 28, 1994, the Neighborhood Traffic Management Program staff
met with representatives from the Campbell-Grant Neighborhood and
discussed the concerns and requests of the property owners and residents.
At the meeting, complaints were made regarding cut-through traffic
and speeding on Water Street and Copper Street, and a request was
made to close Water Street at Wilson to prevent cut through traffic.
On November 2, 1994, counters were placed on Copper Street and Water
Street between Norris Avenue and Wilson Avenue for speed and volume
counts. Counters were also placed on Norris, Olsen, and Plumer Avenue
between Spring Street and Grant Road for volume counts only. All
vehicle speeds were excessive on Copper Street and Water Street between
Campbell Avenue and Tucson Boulevard for both eastbound and westbound
traffic. A traffic circle was recommended on Plumer Avenue at Water
Street and on Plumer Avenue at Copper Street to help reduce the speed
of vehicles and also to enhance the beautification of the neighborhood.
In January, 1995, two speed humps were installed on Water Street
and two speed humps were installed on Copper Street between Campbell
Avenue and Tucson Boulevard, north of Grant Road. In June, 1995,
a traffic circle was installed on Water Street at Plumer Avenue.
In March, 1996, a follow-up traffic study was requested to determine
how the installation of the speed humps and the traffic circle had
affected the speed and volume of traffic. Overall, the speed and
volume of traffic was significantly reduced by the placement of the
mitigation.
In November, 2003, the residents of Water Street in the Campbell-Grant
Neighborhood submitted a petition, requesting a follow-up traffic
study expressing concern about the volume and speed of traffic in
their neighborhood.
Data Analysis
Average Daily Traffic (ADT) counts were taken in various locations
to determine the average speed and volume of traffic on Water Street.
The results of the data collected for Campbell-Grant Neighborhood
are on the attached map and tables.
Traffic volume should not exceed 1,000 vehicles per day on any neighborhood
residential street. Traffic volumes on neighborhood streets should
be consistent with the density of residential development that is
served by a particular neighborhood street. As a general guideline,
traffic volumes on neighborhood streets (total for both directions)
should not exceed.
- Local Street, low density – 1,000 vehicles per day, or 75
vehicles per hour.
- Local Street, high density – 2,000 vehicles per day or 150
vehicles per hour.
- Collector Street – 8,000 vehicles per day, or 800 vehicles
per hour.
Vehicle speeds on neighborhood streets generally should be:
- Local Street – 25 miles per hour
- Collector street – 30 to 35 miles per hour
Neighborhood Traffic Management Report for
Water Street in the Campbell-Grant Neighborhood
Page 2 of 2
Volume
On a residential street, traffic should not exceed 1,000 vehicles
per day or 75 vehicles per hour. The ADT did not exceed 1,000 vehicles
per day or 75 vehicles per hour in any of the traffic count locations.
This indicates that the ADT is normal, and there is no excessive
traffic. The volume of traffic was significantly reduced in all locations
except for a slight increase in traffic at the following locations:
-- Traffic entering Norris Avenue at Grant Road
-- Traffic entering and exiting Olsen Avenue at Grant Road
-- Traffic (westbound) on Water Street between Norris Avenue and
Plumer Avenue
-- Traffic (eastbound) on Water Street between Norris Avenue and
Plumer Avenue
Speed
The average vehicle speed ranged from 14mph to 26mph, which does
not indicate a speeding problem.
The 85th Percentile gives the average speed of 85% of the traffic
traveling on a specified street. Vehicles traveling greater than
25mph is considered high for a residential street. Except for Plumer
Avenue between Grant Road and Spring Street, The 85th percentile
was above normal (between 27% and 32%) and indicates a slight speeding
problem at the following locations:
-- Water Street west of Olsen Avenue-eastbound (30) /westbound (29),
-- Water Street east of Plumer Avenue -eastbound (31) /westbound
(30),
-- Copper Street west of Wilson Avenue-eastbound (32) /westbound
(30),
-- Copper Street east of Olsen Avenue-eastbound (27) /westbound (29),
-- Olsen Avenue between Grant and Spring Street-northbound (28) /southbound
(28),
-- Norris Avenue between Grant and Spring Street-northbound (27)
/southbound (28),
-- Copper Street east of Campbell Avenue-eastbound (28) / westbound
(27),
-- Spring Street between Olsen Avenue and Plumer Avenue-eastbound
(29)
The percent of vehicles traveling over 25mph was under 50%, except
for the following two locations, which is slightly above normal,
and indicates a slight speeding problem:
-- Water Street east of Plumer Avenue-eastbound (53)
-- Copper Street west of Wilson Avenue-eastbound (54)
Overall, the traffic speed has decreased significantly since the
traffic counts were taken in 1994 and 1996.
The 85th percentile (average speed of 85% of the traffic on a specified
street) increased slightly or remained the same from 1996 at the
following three locations, but does not indicate a speeding problem:
Water Street between Norris Avenue and Olsen Avenue (from 27 to
30 mph)
Water Street east of Plumer Avenue (30 mph-remained the same)
Copper Street between Norris Avenue and Plumer Avenue (27 mph-remained
the same)
Recommendations
The Neighborhood Traffic Management Program staff will work with
the Neighborhood to address any concerns regarding these counts.
The overall volume of vehicles for the Campbell-Grant Neighborhood
seems consistent with the density of residential development. According
to data assembled by the institute of Transportation Engineers, single
family detached residents serve as origins or destinations for five
to twenty trips on a typical workday. The streets that exhibit speeds
higher than 85th Percentile over 25 miles per hour indicate the need
for increased police enforcement and/or implement and evaluate remedial
actions.
