Gateway Guide: St. Louis District Mobility March/April 2017

2017·8.8 MB·English

by  Missouri Department of Transportation

St. Louis District Mobility

MoDOT

March/April 2017

Gu idePost

Freeway mobility consistent in am

peaks with slight decrease in
mobility for the pm peak from
March to April.

Average Incident lane clearance

continued to improve despite a big

jump in the number of incidents

Average 24 hour volumes are
listed for trending Purposes
only. Actual volumes vary

because of the loss of probe data

along several routes and the
addition of data from new routes
Traffic Engineers adjust signals to mitigate
Torrential rainfall hit The the impact for an incident like the one
District the last weekend in April pictured above on March 15, 2017.

Causing historic flooding and Adjusting the signal timing allowed traffic
to use the outer road as a detour.
closure of 100 plus roads

Mobility Snapshot

AM PM Freeway Mobility
March to April Comparison: __
AM Improvement / PM decreased mobility

ZONING IN

Major Incidents
TMS Work Zones Mar 2017: 10  Apr 2017: 4
♦ March 2017: 229

♦
April 2017: 283

Average Incident Duration Mar  Apr

Work Zone breakdown: Lane Clearance: 24:55  23:53
♦ Major: 3 – 0.88% Incident Clearance: 28:59  28:05
(Min: sec)

♦
Moderate: 6 – 1.76%
♦
Minor: 332 – 97.36%
Major Impact Work Zones

Work zone crashes: 9 Mar  1 Apr  2
Moderate Impact Work Zones

Mar  2 Apr  4

Gateway Guide
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Transportation Management Cen ter
Work Zones

TMC Observed Work Zones
March - April 2017

March Apr
Level of Travel Time Number of Work Level of Travel Number of Work
Impact Zones Time Impact Zones
Major Impact 1 Major Impact 2
Moderate Impact 2 Moderate Impact 4
Minor Impact 160 Minor Impact 172
Total 163 Total 178
*Impact Levels described in Data Key

SL Mobility Rating: SL Visibility levels:
♦ ♦
Mar 2017: 94% Mar 2017: 99%
♦ ♦
Apr 2017: 98% Apr 2017: 96%
♦ ♦
Goal: 91% Goal: 91%

Additional Travel Time Impacts through Work Zones

Major Impact (15 Minutes or Above) Moderate Impact (10-14 Minutes)

-3/9 (Th-ursday-) East-bound- I-44 fr-om Ed-gar to -Shrew-sbury -— 3 rig-ht lane-s (1 -Majo-r 2
Moderates)
 Closed three lanes with one lane of traffic open for preparation for shifting eastbound traffic onto
westbound lanes
__ _
 All mitigation efforts were in use
 RITIS data recorded additional travel times of 16 minutes in both peaks
_ _ _ _ _ _ _ _ _

____,
4/15 (Saturday) Southbound I-55 at Route Z 2 right lanes (1Major 2 Moderates)
 Traffic reduced to one lane all weekend (Easter Weekend) for bridge work
 All mitigation efforts were in use
 RITIS data recorded additional travel times of 33 minutes
- - - - - - - - -- --------
4/16 (Sunday) Southbound I-55 at Route Z 2 right lanes (1Major 2 Moderates)
 Traffic reduced to one lane all weekend for bridge work. (Easter Weekend)
 All mitigation efforts were in use
 RITIS data recorded additional travel times of 31 minutes

Work Zone Related Crashes with Mobility Impact

***None***

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Work Zones

YTD Work Zone Crashes Relative to Work Zone

--Advanced Warning Area ~ Transition Area Activity area - Termination Area

YTD Work Zone History

......
---
Major Travel Impact Work Zones Moderate Travel Impact Work Zones Work Zone Crashes

18

16

14

12

10

8

6

4
2
0
Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 Nov-16 Dec-16 Jan-17 Feb-17 Mar-17 Apr-17
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Incident Management

March 2017 vs. April 2017

Incidents Summary

1-44 1-55 1-64 1-70 1-170 1-270 M0-364

Mar Apr Mar Apr Mar Apr Mar Apr Mar Apr Mar Apr Mar Apr Mar Apr

■Average Time for Backup to Clear=
T6-T4

• Average Time to Clear Incident from

Lanes = T4 -T1

response

e

Detection

Notification

111111111111111
Terminology, V111f1c11,on, D1sp1tch

Arrival
I I I I I I I I I I I I I I I
Size-Up, Vth1clt Positioning

Response Activities
I I I I I I I I I I I I I I I I I I I I I I
Scent S1f11y, Command Rtsponsib1htits,

Traffic M1n1g1mtnt, Sptc11I Cond111ons

Clearance
& Termination
I I I I I I I

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Incident Management

March/April 2017 Incidents Map

Northbound I-270 Westbound I-270 at
past Dorsett Old Halls Ferry Road

Eastbound MO
364 at MO 94
Eastbound/Westbound MO 340

at Ross Avenue and Questover

Westbound I-64 at
Westbound I-64 Route 141 Westbound I-44
Ramp to Route K past Memorial

Eastbound I-64 past
Chesterfield Airport Road Eastbound I-64
at MO 340

Eastbound I-64

at McCausland
Avenue
Eastbound I-44 past

Route 141
Eastbound I-44 at
I-55

Southbound I-270
at I-44

Number of Incidents
Northbound I-55 before
1 2 3 4 5 6+
Reavis Barracks Road
Incidents

Crashes

Denotes Location of Major Impact Traffic Incidents

Total Number of Incidents: February: 711 / March: 842 / April: 969

Total Number of Lane Blocking Incidents

250 Major Impact Incidents

March 2017 vs. April 2017
200
(10) (4)

150
Fatal Incidents

100 March 2017 vs. April 2017

(10) (7)
50

0 Tractor Trailer Incidents
All
1-270 1-70 1-64 1-44 1-55 1-170 Mo-364 Mo-370
Others March 2017 vs. April 2017

Feb 142 132 103 91 74 60 25 13 71
■Mar 172 186 118 115 83 63 28 15 62 (45) (32)
Apr 219 213 132 135 93 67 22 15 73

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Incident Management

Lane Blocking Incidents by Freeway March and April 2017

Interstate Month Number of Average Time to Clear Incident Average Time Freeway Miles Incidents per Mile

Incidents from Lanes = T4 - T1 for Backup to

Clear = T6 - T4

I-44 Mar 115 28:37 01:53 33 3.48

I-44 Apr 135 22:09 01:25 33 4.09

I-55 Mar 83 27:33 01:49 23 3.61

I-55 Apr 93 20:23 02:20 23 4.04

I-64 Mar 118 25:40 02:23 40 2.95
I-64 Apr 132 19:56 01:22 40 3.30
I-70 Mar 186 20:44 03:05 38 4.89
I-70 Apr 213 22:31 04:42 38 5.61
I-170 Mar 63 21:44 01:36 11 5.73
I-170 Apr 67 16:20 01:07 11 6.09
I-270 Mar 172 23:08 04:02 36 4.78
I-270 Apr 219 23:56 03:43 36 6.08

MO-364 Mar 28 22:51 00:02 11 2.55

MO-364 Apr 22 17:16 01:30 11 2.00

MO-370 Mar 15 22:44 00:00 13 1.15

MO-370 Apr 15 29:20 00:00 13 1.15

Total Mar/Apr 1676 22:48 01:56 410 4.09

*Note changes in Incident reporting data
began in July 2015
1,200

1,000 889 997 1002 1009
800 576 662 636 647 767 755 906 889

600

400

200 26:49 26:59 27:23
23:10
0 30:45 31:34
26:32
','b~ '. ',.<, «~ : ..<. , ~'b,._ {, ' "?'-~i. :{ ' ~'b., x"~' '>"~ { ' '>~" "~' "?'-"~ {2 8': 10c .,e<2{i 6': 15 oc.-;. .3:..<,0, ,: 16 2'.',7.<,: 36 3{0': 57
~o~ <.:
'v'l,

Feb-15 Apr-15 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Dec-15

26:59 23:10 31:34 26:32 28:10 26:15 30:16 30:57

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Incident Management

1,200
1,080000 704 782 847 846 834 863 822 887 843 803 871

600

400
200 -28:53 -31:59 -25:59- 31 -
0 - - - -
-
\'l>; f~ <o «e 9: -,<; o ~'l>I: ~ <o 'Ii-~I :~ <o ~'l>~~ <o -.,-s; f~ -.,-~s ~<o @:., .<.o :,,,<o ..<. o2 5:09 25:27
'Ii-,$ ,.,e,~ o(..j. : ~:-,<; o ..<. o
~o ,.;
<;JI'

Jan-16 Nov-16

1,200
969
1,000 807 842
711
800

600

400
-
200 27:39 25:52 24:55-
23:53
0

\'l>; f~ «e9~ I:.."., I:.."., ~..".,
~'l> 'Ii-~ ~'l> -.,-s; f◊

May-17 Jun-17 Jul-17 Aug-17 Sep-17 Oct-17 Nov-17 Dec-

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Incident Management

2014 Tractor Trailer Incidents/ Time to Clear

.. 90
.",' 80
.C.,
70
·=;:; 60
so
40
30

20
10
0

Jan-14 Feb-14 Mar-14 Apr-14 May-14 Jun-14 Jul-14 Aug-14 Sep-14 Oct-14 Nov-14 Dec-14 AVG-14
I
■ Incidents 78 35 30 37 28 39 26 37 28 30 31 38 36

l■TTCI 69.68 66.20 49.50 40.89 56.39 85.13 28.48 29.43 54.71 42.58 43.32 55.76 51.84

2014 I-44 I-55 I-64 I-70 I-170 I-255 / I-270 Route 364 Route 370 * Other Total TTCI
Jan 20 7 9 24 3 11 3 1 0 78 69.68
Feb 5 3 6 13 1 6 0 1 0 35 66.20
Mar 8 7 5 5 0 4 0 1 0 30 49.50
Apr 5 3 12 7 0 10 0 0 0 37 40.89
May 5 8 4 4 1 6 0 0 0 28 56.39

Jun 11 8 5 8 0 7 0 0 0 39 85.13

Jul 4 2 8 4 0 7 0 1 0 26 28.48

Aug 5 4 7 8 2 10 0 1 0 37 29.43
Sep 3 3 4 10 0 7 0 1 0 28 54.71
Oct 5 6 4 4 1 7 0 3 0 30 42.58
Nov 2 4 5 9 1 7 0 3 0 31 43.32
Dec 7 7 2 12 1 8 0 1 0 38 55.76
YR Totals 80 62 71 108 10 90 3 13 0 437 51.84

*Other Routes are MoDOT maintained non-freeway routes and were not included on system until July 2015

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Incident Management

2015 Tractor Trailer Incidents/ Time to Clear

80
70
,~Cc.u: 60
=·;:; so
40
30
20
10

0

Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Avg-15
I■ Incidents 35 53 46 38 31 41 43 38 56 60 47 56 45

l■TTCI 38.29 55.81 76.85 35.65 89.66 73.46 64.72 67.89 59.32 50.97 68.15 41.66 60.20

2015 I-44 I-55 I-64 I-70 I-170 I-255 / I-270 Route 364 Route 370 * Other Total
Jan 7 4 4 10 0 9 0 1 0 35 38.29
Feb 20 2 6 9 1 14 1 0 0 53 55.81
Mar 9 4 11 14 0 7 0 1 0 46 76.85

Apr 7 3 7 17 1 2 1 0 0 38 35.65

May 5 2 9 10 0 3 1 1 0 31 89.66

Jun 9 3 6 10 0 12 0 1 0 41 73.46

Jul 6 6 8 8 1 11 0 0 3 43 64.72
Aug 10 2 3 11 0 9 0 0 3 38 67.89
Sep 11 9 5 17 2 9 0 1 2 56 59.32
Oct 12 12 8 17 1 8 0 0 2 60 50.97
Nov 8 4 7 14 0 11 0 0 3 47 68.15
Dec 5 9 8 19 2 8 0 0 5 56 41.66

YR Totals 109 60 82 156 8 103 3 5 18 544 60.20

*Other Routes are MoDOT maintained non-freeway routes and were not included on system until July 2015

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Incident Management

2016 Tractor Trailer Incidents/ Time to Clear

80
70
,'."i,:,' 60
'ti 50
.E
40
30
20

Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 Nov-16 Dec-16 AVG-16

I■ Incidents 30 48 59 59 36 47 48 46 54 45 38 48 47
l■TTCI 54.17 56.28 57.21 66.97 62.44 48.36 80.96 41.89 59.87 64.13 66.89 72.21 60.95

2016 I-44 I-55 I-64 I-70 I-170 I-255 / I-270 Route 364 Route 370 * Other Total

Jan 7 3 4 5 1 10 0 0 0 30

Feb 10 3 10 15 2 5 0 1 2 48

Mar 14 6 6 22 2 8 0 0 1 59

Apr 14 7 6 16 1 11 0 2 2 59

May 7 4 5 9 0 7 0 2 2 36

Jun 14 3 8 12 0 7 0 1 2 47

Jul 16 3 5 13 0 6 0 2 3 48

Aug 16 3 4 9 2 11 0 0 1 46

Sep 12 3 5 18 1 13 0 0 2 54

Oct 10 4 5 11 0 10 0 3 2 45

Nov 18 6 1 6 0 4 0 2 1 38
Dec 5 7 7 14 1 11 0 1 2 48
YR Totals 143 52 66 150 10 103 0 14 20 558

*Other Routes are MoDOT maintained non-freeway routes and were not included on system until July 2015

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