Upload
ember
View
54
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Developing a Walk-Out Evacuation Plan for Washington, DC. TRB National Transportation Planning Applications Conference by Phil Shapiro, VHB. May 2007. Contributors. Soumya Dey, DDOT Joe Kammerman, DDOT George Branyan, DDOT David Anspacher, VHB Dalia Leven, VHB Peter Cusolito, VHB - PowerPoint PPT Presentation
Citation preview
May 2007
Developing a Walk-Out Evacuation Plan for Washington, DC
TRB National Transportation Planning Applications Conference
by Phil Shapiro, VHB
2
Contributors
Soumya Dey, DDOT Joe Kammerman, DDOT George Branyan, DDOT David Anspacher, VHB Dalia Leven, VHB Peter Cusolito, VHB Joe Ojeda, VHB
3
Objectives
Facilitate pedestrian egress due to an event that requires an undeclared evacuation of DistrictTerrorismChemical spillOther
Identify pedestrian evacueesVolumeTravel patterns
Develop systematic plan to facilitate pedestrian egress
4
Model & Planning Assumptions Initial step of continuing planning process Follow-on planning required for MOUs, SOPs, etc Plan supports evacuation of:
Entire City Individual Sub-areas of District
Includes residents, non-residents & visitors Separate plans for:
Mobility impaired K-12 students (public and private)
Start-up time for evacuee bus transportation: 3 hrs
5
Project Status
Initial Analysis Completed Draft Proposal for Inclusion in Emergency
Transportation Annex Stakeholder Coordination Continuing Operational Issues Under Review Standard Operating Procedures Must be
Developed
6
EMP Sustainability Model
7
Project Overview
Determine Evacuation Scenarios
Pedestrian Volumes and Routes
Emergency Transportation Annex (ETA)
Operational Strategies for Implementation
8
Review Existing Information Threat Vulnerability Assessment Emergency Transportation Annex Vehicle Evacuation Plan/Routes Consequence Mgmt Center & Traffic Mgmt Center
protocols, procedures, diagrams and maps Transfer Locations Census Data Travel Data Available pedestrian facilities (sidewalks, etc.)
9
Evacuation Structure•Transfer Points
•Collection Areas
•Bus Routes
10
Pedestrian Evacuation Structure
11
Pedestrian Evacuation Structure (Continued)
12
Walk-Out Routes Pedestrians guided to routes that minimize interference
with vehicular travel Pedestrians able to walk on all facilities Pedestrians will be supported on walk-out routes
Information Police / traffic control Food and water Medical
Use of sidewalks and a few designated roadways (only when sidewalks too crowded)
13
Evacuation Time Periods
Daytime IncidentMost bodies at desksWeekday - 10:00 a.m. to 2:00 p.m.Evacuation of entire city
Nighttime IncidentMost bodies in bedWeekday - 12:00 a.m. to 4:00 a.m.Evacuation of entire city
14
Model Structure
15
Estimating Number of Evacuees (Daytime)
16
Estimating Number of Evacuees(Trip Generation)
17
Estimating Number of Evacuees(Trip Generation)
18
Estimating Number of Resident Evacuees
(Trip Generation)
19
Estimating Number of Non-Resident Evacuees
(Trip Generation)
20
Estimating Number of Visitor Evacuees
(Trip Generation)
21
Pedestrian Volumes
Evacuees at time of eventDaytime scenario – approx. 850,000Nighttime scenario – approx. 700,000
Evacuees that are pedestriansDaytime scenario – approx. 400,000Nighttime scenario – approx. 300,000
Evacuees by sub-area
22
District of Columbia Sub-Areas
23
Evacuees Daytime Nighttime
Total 100,000 120,000Peds 50,000 55,000
Evacuees Daytime Nighttime
Total 85,000 130,000Peds 40,000 50,000
Evacuees Daytime Nighttime
Total 100,000 115,000Peds 45,000 45,000
Evacuees Daytime Nighttime
Total 100,000 150,000Peds 45,000 60,000
Evacuees Daytime Nighttime
Total 445,000 185,000Peds 225,000 85,000
Evacuees by Sub-Areas
24
Destination/ Mode Choice
25
Destination/Mode Choice
Choice of destination (transfer point, collection area) is determined by weighted total time Walk Time (weight = 1.5) Wait Time (weight = 1)
Startup Time (assumed as 3 hrs) Queue Time
Bus Time (weight = 1) Logit model distributed evacuees across all of
the available transfer points and collection areas
26
Pedestrian Evacuees by Transfer Point(Inside District)
EvacueesHours to Evacuate Evacuees
Hours to Evacuate
TP #1 4,800 10,500 2 8,500 2TP #2 4,800 12,000 3 7,500 2TP #3 2,400 6,500 3 5,000 2TP #4 2,400 7,500 3 7,000 3TP #5 4,800 12,000 3 8,500 2TP #6 4,800 17,500 4 9,500 2TP #7 4,800 13,500 3 7,000 1TP #8 2,400 6,500 3 6,500 3TP #9 2,400 7,000 3 6,500 3TP #10 2,400 8,000 3 6,500 3TP #11 2,400 8,000 3 7,000 3TP #12 2,400 6,000 3 6,000 3TP #13 2,400 7,500 3 7,000 3
TP #14 2,400 8,000 3 4,500 2TP #15 2,400 5,500 2 6,500 3TP #16 2,400 4,500 2 5,000 2TP #17 2,400 6,000 3 5,500 2TP #18 2,400 7,500 3 7,000 3TP #19 2,400 4,500 2 4,000 2TP #20 2,400 7,500 3 7,000 3TP #21 4,800 10,000 2 8,500 2TP #22 4,800 11,500 2 7,000 1TP #23 2,400 7,500 3 5,500 2TP #24 2,400 7,500 3 6,500 3Total 202,500 159,500
Transfer Point
Bus Capacity per
Hour
Daytime Nighttime
27
Daytime Pedestrian Evacuees
Number of Pedestrians
Collection Area Walking Directly Total Arriving
VA #1 3,500 19,500
VA #2 12,500 25,000
VA #3 1,500 30,000
MD #1 18,000 45,000
MD #2 9,000 36,000
MD #3 10,500 26,000
MD #4 40,000 69,500
MD #5 500 20,000
MD #6 67,000 93,500
Total 162,500 364,500
28
Assignment
Uses standard regional model with some modifications to the network:Addition of non-vehicular facilitiesRemoval of vehicle-only highway facilitiesRemoval of all one-way restrictionsDefinition of all speeds as 3 mph (4 ft/sec)
29
Walk-Out Corridors
Preliminary Draft
30
Corridor Analysis
Volume(people)
67,000
Sidewalk & Street
Sidewalk Only
58,000
57,000 44,000
58,000
44,00058,000
Capacity (people/hour)
42,000
39,000
23,000
28,000
46,000
31
Corridor Volume & Capacity Comparison
32
Corridor Support
33
Research Topics How far are people willing to walk during an evacuation? Where do you direct pedestrian evacuees? Who will wait for transportation and who will walk? What support services are necessary?
Water Medical Other
How can undeclared evacuation be supported? If sidewalk facilities are insufficient to accommodate pedestrian
volumes, how do you dedicate roadways to evacuees? Limited access facilities At grade roadways
Questions?