Freeway Traffic Flow Plan

1
Freeway Traffic Flow Plan

• TXDOT Presentation, Austin, TX
• Friday, January 11, 2008
• David Smith

2
Purpose of Presentation

• 1.) Seeking Implementation
• 2.) Seeking Referral
• 3.) Seeking Remuneration.

3
Successes To-Date

• North Central Texas Council of Governments
  (NCTCOG)
• Accepted, discussed, and forwarded to Denton to
  consider for implementation
• Georgia Department of Transportation
• Plan accepted for consideration at State level

4
The Basic Problems Identified

• Congestion largely due to poor design
• Diamond Formation
• Entrance ramp followed by exit ramp (criss-cross)
• Stretches of freeway with no service road
• Keeps this plan from being implemented
• Local traffic introduced to freeway
• Multiple consecutive entrance ramps
• Left entrances / exits cause criss-cross effect

5
IH 35E Current Ramp Configuration FM 2181
(Teasley Lane) to Loop 288 South
US 77 Dallas Dr
Loop 288 South
Teasley Ln
No auxiliary lane between ramps.
No auxiliary lane between ramps.
IH 35E
Left-hand US 77 Entrance Ramp does not meet
driver expectations, does not add an auxiliary
lane, and is too close to the Loop 288 Exit Ramp.
IH 35E SB Exit Ramp for Loop 288 is too close to
the intersection.
FM 2181 Entrance Ramp occurs on a steep
incline with no auxiliary lane.
Lillian Miller Pkwy
Pennsylvania Ave
FM 2181 Teasley Ln
N
6
IH 35E Proposed Near-Term Safety
Improvements FM 2181 (Teasley Lane) to Loop 288
South
US 77 traffic Must use Teasley Lane To enter SB
IH 35E.
US 77 Dallas Dr
Loop 288 South
Teasley Ln
Add auxiliary lane between ramps.
Add auxiliary lane between ramps.
IH 35E
Left-hand US 77 Entrance Ramp is removed.
Loop 288 traffic exits SB IH 35E at the existing
Pennsylvania Avenue Exit Ramp.
Relocated SB Entrance Ramp for FM 2181 and US 77.
Add auxiliary lane between ramps.
Lillian Miller Pkwy
Pennsylvania Ave
FM 2181 Teasley Ln
For more information, contact Jeffrey C.
Neal NCTCOG 616 Six Flags Drive Arlington, TX
76005 [phone] jneal_at_nctcog.org
N
7
I-35 E, Carrollton/Lewisville FM 3040 Arrows
represent redirects Exits to previous
Entrances to next SH 121 Three consecutive
entrances and exits Frankford Rd Three
consecutive entrances and exits SH 190 PGBT
Southbound
Northbound
8
FM 3040 SH 121 Frankford Rd SH 190 PGBT
Southbound
Northbound
9
Generic Freeway
Entrance
Exit
Service Roads / Cross Streets
A
B
C
CONGESTION
CONGESTION
Close Entrance Ramp Redirect to next Entrance Ramp
Close Exit Ramp Redirect to previous Exit Ramp
A
B
C
Traffic exits freeway before new traffic is
introduced. Service road becomes modified
collector-distributor lanes.
10
I-635 Eastbound, North Dallas
Webb Chapel
Marsh
Midway
CONGESTION
CONGESTION
Traffic removed from freeway before new traffic
introduced. Local traffic does not enter freeway.
Webb Chapel
Marsh
Midway
11
The Solution Proposed

• Complete service roads
• Remove traffic then introduce new traffic
• Keep freeway traffic moving

12
Implementation

• Deploy concrete barricades and signage
• Construction of new on- / off-ramps
• Completion of Service Roads

13
Compensation

• Texas Law requires P.E. for TXDOT Contractors or
  Consultants
• Texas Law requires bidding process
• Plan was designed by an Entrepreneur and is being
  offered to the Government