RE: Response requested -- Re: Question - New Left turn lanes at Sandy Lake and Denton Tap (2)Keith,
I was able to visit the site late last week to observe the turning
movements at the intersection. I also asked Robert Jenkins to review the
layout. He forward me the attached exhibits and notes below. We
attempted to connect on Friday to discuss but I was out of the office on
a school field trip with my youngest.
Chris,
The two attachments show the situation with a WB-50 and a WB-62
situation assuming that a truck and a passenger vehicle are turning side
by side in each direction. Traditionally this is the situation and not
two trucks side by side in both directions. We showed the two truck
scenarios because we did not know the City’s criteria. Note that with
the WB-62, the truck uses part of the outside lane on Denton Tap for his
departure. These drawings suggest to me that the dual lefts are ok,
especially since a truck is not normally involved, cars should not have
a problem.
However, if needed, I will be glad to observe in the field.
Robert
I’ll call you tomorrow morning to discuss this as well as provide
update on other items for Sandy Lake.
Thanks
Chris
Chris Schmitt, P.E.
Principal
17304 Preston Road, Suite 1340
Dallas, Texas 75252
214.461.9867 Main
903.421.1897 Mobile
214.461.9864 Fax
cschmitt@tnpinc.com <mailto:cschmitt@tnpinc.com>
From: Keith Marvin [mailto:KMarvin@coppelltx.gov]
Sent: Sunday, October 19, 2014 5:32 PM
To: Jo Ann H. Hill
Cc: Mario Canizares; George Marshall; Kenneth Griffin; Chris Schmitt
Subject: Re: Response requsted -- Re: Question - New Left turn lanes at
Sandy Lake and Denton Tap
Mrs. Hill,
As the project manager for the Sandy Lake Road project, it was my
responsibility to respond to your inquiry concerning the new turn lanes
at Sandy Lake and Denton Tap. I apologize for not getting back to you
in a timely manner.
Several of us have observed the movement of traffic through this
intersection, and we agree with your assessment that it presents an
uncomfortable situation for drivers. We have discussed this situation
with both the city Traffic Engineer, and the design engineer for the
project. We are looking at options ranging from physical modification
of the intersection to operational changes of the signal to minimize the
likelihood of conflicts between these two left turning movements.
We hope to have a decision in the near term. Thank you for bringing
this concern to our attention.
Keith Marvin
City of Coppell
On Oct 19, 2014, at 4:26 PM, "Kenneth Griffin" <KGriffin@coppelltx.gov
<mailto:KGriffin@coppelltx.gov> > wrote:
Yes, I received your email and forwarded it to my engineer for
that project. He and I met with my Traffic Engineer last week to discuss
the issue. We are considering several options to address your concern.
Someone will be in contact with you next week.
Ken Griffin
On Oct 19, 2014, at 3:20 PM, Jo Ann H. Hill <joannhh@usa.net
<mailto:joannhh@usa.net> > wrote:
Hi Ken, please let me know if you received my email sent
last week, and considerations for a resolution.
Best regards,
Jo Ann
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jo Ann H. Hill
(H) 972-393-1137
(C) 214-236-8260
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
------ Original Message ------
Received: 10:41 PM CDT, 10/12/2014
From: "Jo Ann H. Hill" <joannhh@usa.net
<mailto:joannhh@usa.net> >
To: <kgriffin@coppelltx.gov
<mailto:kgriffin@coppelltx.gov> >
Subject: Question - New Left turn lanes at Sandy Lake
and Denton Tap
Hi Ken, I realize that the road construction is
new and may not be totally complete yet; however, I wanted to voice a
concern that the new two left turn lanes (coming from the West) turning
onto Denton Tap can possibly present a danger of car collisions with
drivers making a left turn (coming from the East) because the turns are
made at the same time.
Many drivers have also been hesitant in making
the turns because visually, it doesn't appear safe.
Please advise if you require further details on
this observation.
Best regards,
Jo Ann
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jo Ann H. Hill
(H) 972-393-1137
(C) 214-236-8260
~~~~~~~~~~~~~~~~~~~~~~~~~~~~