HomeMy WebLinkAboutREGENCY LAKEVIEW - PDP & APU - PDP120013 - REPORTS - TRAFFIC STUDY0
UNSIGNALIZED INTERSECTIONS
Level -of -Service
Average Total Delay
seclveh
A
<10
B
>10and <15
c
> 15 and < 25
D
> 25 and < 35
E
>35and <50
F
> 50
•
•
APPENDIX A
delay for the right turns was 6 seconds, with the longest observed delay of 19 seconds.
In the afternoon peak hour, there were 20 southbound left turns and 34 southbound
right turns. The average delay for the left turn was 23 seconds, with the longest
observed delay of 63 seconds. The average delay for the right turns was 10 seconds,
with the longest observed delay of 44 seconds.
The Drake/Brookwood (south leg) intersection serves the west portion of the
Lake Sherwood neighborhood, south of Drake Road. In the morning peak hour, there
were 16 northbound left turns and 20 northbound right turns. The average delay for the
left turns was 10 seconds, with the longest observed delay of 31 seconds. The average
delay for the right turns was 7 seconds, with the longest observed delay of 30 seconds.
In the afternoon peak hour, there were 16 northbound left turns and nine northbound
right turns. The average delay for the left turn was 22 seconds, with the longest
observed delay of 49 seconds. The average delay for the right turns was 5 seconds,
with the longest observed delay of 11 seconds.
This area is considered to be in a "low -density mixed -use residential district."
According to Chapter 4, Larimer County Urban Area Street Standards (LCUASS),
acceptable operation at stop sign controlled arterial/collector and arterial/local
intersections is defined as level of service (LOS) F for any approach leg. The City of
Fort Collins considers the delay associated with LOS F to be normal in an urban
environment. A description of the range of delay associated with each LOS category is
provided in Appendix A. It should be noted that the delay is defined as AVERAGE
DELAY for the movement or approach. Table 1 shows the average delay at each
intersection and the associated level of service category. Based upon the traffic data,
the delays to the minor street traffic are in the level of service A, B, and C categories. In
fact, only three times did the longest observed delay fall into the level of service F
category at the Drake/Brookwood (north leg) intersection. It is concluded that the minor
street delay at these intersections is acceptable.
TABLE 1
Current Observed Peak Hour Operation and Delay
AM
PM
Average
Level of
Average
Level of
Intersection
Movement
(secoinds)
Service
elay
(seDconds)
Service
NB LT
13
B
21
C
Drake/Dorado
NB RT
8
A
16
C
SB LT
22
C
23
C
Drake/Brookwood (north leg)
SB RT
6
1 A
10
A
NB LT
A
C
Drake/Brookwood (south leg)
NB RT
7 7
A
5
5
A
—/y L—DELICH 2700 S. Lemay Delay Analysis, January 2012
-7/ rASSOCIATES
DELICH ASSOCIATES Traffic & Transportation Engineering
2272 Glen Haven Drive Loveland, Colorado 80538`
Phone: (970) 669-2061 Fax: (970) 669-5034 j r
MEMORANDUM
TO: Lisa Evans, Regency Residential Partners
FROM: Matt Delich
DATE: January 6, 2012
SUBJECT: 2700 S. Lemay — Delay study at Drake Road intersections
(File: 1140ME02)
At your request, we conducted peak hour intersection delay studies at three
intersections along Drake Road, east of Lemay Avenue. The three intersections are: 1)
Drake/Dorado; 2) Drake/Brookwood (north leg); and 3) Drake/Brookwood (south leg).
These are all T-intersections with stop sign control on the minor streets (Dorado Court
and Brookwood Drive). The purpose of this exercise is to determine the delay
experienced by motorists entering Drake Road from these streets.
Drake Road is designated as four -lane arterial street on the Fort Collins Master
Street Plan. In this area, it has two through lanes in each direction with a continuous
two-way left -turn lane. There are bike lanes on each side of Drake Road. The posted
speed is 40 mph. Dorado Court and Brookwood Drive (both legs) are designated as
local streets on the Fort Collins Master Street Plan. These local streets do not have
pavement striping on their respective approaches to Drake Road. During data
collection, it was observed that there was seldom more than one vehicle approaching
Drake Road on the minor streets at one time. When there was more than one vehicle,
the left -turning vehicle and right -turning vehicle most often positioned themselves such
that there were two vehicles abreast.
The intersection with the least amount of traffic was the Drake/Dorado
intersection. There are ten dwelling units on Dorado Court. In the morning peak hour,
there were six northbound left turns and two northbound right turns. The average delay
for the left turns was 13 seconds, with the longest observed delay of 32 seconds. The
average delay for the right turns was 8 seconds, with the longest observed delay of 11
seconds. In the afternoon peak hour, there was one northbound left turn and three
northbound right turns. The observed delay for the left turn was 21 seconds. The
average delay for the right turns was 16 seconds, with the longest observed delay -.of 21
seconds.
The Drake/Brookwood (north leg) intersection serves the Parkwood
neighborhood, north of Drake Road. In the morning peak hour, there were 18
southbound left turns and 35 southbound right turns. The average delay for the left
turns was 22 seconds, with the longest observed delay of 72 seconds. The average