20211208
15570000
1.0
FALSE
msaOlderDrivers_State
34175.913200
330613.526600
777674.625100
959742.959900
1
002
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001
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20210825
10160200
20210825
10192100
FGDC
150000000
5000
dataset
Bonnie Polin
Mass DOT Highway Safety and Engineering
Manager
857-368-9639
10 Park Plaza, Suite 7210
Boston
MA
02116
bonnie.polin@dot.state.ma.us
20210825
ArcGIS Metadata
1.0
File Geodatabase Feature Class
Network Screening Older Driver Safety Risk by Statewide Ranking
2021-03-23
Bonnie Polin, Mass DOT Highway Safety and Engineering, Manager
vector digital data
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Network Screening – Systemic/Risk Based data can be used to access and visualize the top risk sites for each of the Strategic Highway Safety Plan emphasis areas based on specific risk factors developed for this emphasis area. The top risk sites are available statewide as well as top risks within each MPO/RPA. Each emphasis area is focused on certain road types so not all roadway segments are included. Details on the specific risk factors and how they were developed for this emphasis area can be found in the MassDOT Network Screening Risk Based Methodology Reports.</SPAN></P></DIV></DIV></DIV>
The risk-based network screening data is based on risk factors identified for many of the emphasis areas of the Strategic Highway Safety Plan. Sites with the greatest risk, ranked based on risk scores which are generated from the number and types of risk factors present, are then visualized. A variety of statistical methods were used to identify the risk factors for each of the emphasis areas This would supplement the crash-based network screening results, allowing agencies to generate safety projects using two justifications: addressing crash “hot spots” (crash-based) and addressing sites with the highest risk of a fatal or injury crash (risk based). This data identifies primary and secondary risk sites for all segments statewide or by MPO/RPA
VHB, MassDOT Highway Traffic Safety
Bonnie Polin
Mass DOT Highway Safety and Engineering
Manager
857-368-9639
10 Park Plaza Suite 7210 Boston MA 02116
Boston
MA
02116
US
bonnie.polin@dot.state.ma.us
IMPACT
ANALYSIS
RISKBASE
IMPACT
ANALYSIS
RISKBASE
Esri ArcGIS 10.7.1.11595
true
-73.521212
-69.909714
42.885994
41.235635
Crash years 2013-2017
2013-01-01
2018-01-01
1
-73.529499
-69.901324
42.888311
41.231849
Measure
Measure
Several sources: Massachusetts Department of Transportation Road Inventory File 2019, 2010 Census data, 2013-2017 RMV crash report data
Several process steps are taken in the data model and analysis used to develop this data available in the methodology reports.
First Edition
Several process steps are taken in the data model and analysis used to develop this data available in the methodology reports.
2021-08-01T00:00:00
294824
EPSG
2.1(3.0.1)
msaOlderDrive_State
Older Driver State Ranked Risk Segments
MassDOT Traffic Safety
Feature Class
294824
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
Geometry
0
Shape
0
0
UNIQUE_ID
Unique ID for segment
VHB
Integer
8
The set of data values is not represented by a domain
UNIQUE_ID
0
0
AADT
AADT
Integer
4
0
0
Average annual daily traffic, measured by counting the total number of vehicles in a year and
dividing by 365.
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
AADT_FLAG
Risk Factor for Segment AADT
Double
8
0
0
Risk Factor for Segment AADT
VHB
The set of data values is not represented by a domain
City
City
SmallInteger
2
0
0
City Code
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
DistrictNa
District Name
String
80
0
0
MassDOT District Name
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
DistrictNu
District Number
String
80
0
0
MassDOT District Number
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
EMS_HOS_FLAG
Risk Factor for Proximity to EMS or Hospital Location
Integer
4
0
0
Risk Factor for Proximity to EMS or Hospital Location
VHB
The set of data values is not represented by a domain
Facility
Facility Type
SmallInteger
2
0
0
Describes the intended function of a road. Facilities with a value less than 7* are included in
official statewide road centerline mileage.
• 1 = Mainline roadway*
• 2 = Roundabout*
• 3 = Tunnel*
• 4 = Doubledeck*
• 5 = Rotary*
• 6 = Causeway*
• 7 = Simple ramp
• 8 = Ramp - NB/EB
• 9 = Ramp - SB/WB
• 10 = Collector - Distributor
• 11 = Simple Ramp - Tunnel
• 12 = Bicycle
• 13 = Private Way
• 14 = Commercial Driveway
Massachusetts Department of Transportation Office of Transportation Planning
|dmFacTypeRisk [Mainline roadway || Roundabout || Tunnel || Doubledeck || Rotary || Causeway || Simple ramp || Ramp - NB/EB || Ramp - SB/WB || Collector - Distributor || Simple Ramp - Tunnel || Bicycle || Private Way || Commercial Driveway || ]|
VHB
F_F_Class
Federal Functional Class
SmallInteger
2
0
0
A general classification system used by the Federal Highway Administration to stratify roads by
significance.
1 = Interstate
• 2 = Principal Arterial – Freeways & Expressways
• 3 = Principal Arterial – Other
• 4 = Minor Arterial
• 5 = Major Collector
• 6 = Minor Collector
• 7 = Local
Massachusetts Department of Transportation Office of Transportation Planning
|dmFFuncClass [Interstate || Principal Arterial - Freeways & Expressways || Principal Arterial - Other || Minor Arterial || Major Collector || Minor Collector || Local || ]|
VHB
From_Measure
From Measure
Double
8
0
0
From Milepost
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
F_Class
Functional Class
SmallInteger
2
0
0
A road classification system used by Massachusetts that incorporates urban/rural census designations and the federal classification system. *The value 4 is no longer used in this field.
• 0 = Local
• 1 = Interstate
• 2 = Urban or Rural Principal Arterial
• 3 = Urban Principal or Rural Minor Arterial
• 5 = Urban Minor Arterial or Rural Major
Collector
• 6 = Urban Collector or Rural Minor Collector
Massachusetts Department of Transportation Office of Transportation Planning
|dmFuncClass [Local || Interstate || Urban or Rural Principal Arterial || Urban Principal or Rural Minor Arterial || Urban Minor Arterial or Rural Major || Urban Collector or Rural Minor Collector || ]|
VHB
Jurisdictn
Jurisdiction
String
1
0
0
The owner of a road, usually responsible for maintenance activities and project initiation.
• 0 = Unaccepted by city or town
• 1 = MassDOT
• 2 = City or Town accepted road
• 3 = Dept. of Conservation and Recreation
• 5 = Massachusetts Port Authority
• 6 = State Park or Forest
• 7 = State Institutional
• 8 = Federal Park or Forest
• 9 = County Institutional
• B = State college or university
• C = US Air Force
• D = US Army Corps of Engineers
• E = Federal Institutional
• F = Other Federal
• G = Federal Bureau of Indian Affairs
• H = Private
• I = US Army
• J = US Navy
Massachusetts Department of Transportation Office of Transportation Planning
|dmJurisdiction [Unaccepted by city or town || MassDOT || City or Town accepted road || Dept. of Conservation and Recreation || n/a || Massachusetts Port Authority || State Park or Forest || State Institutional || Federal Park or Forest || County Institutional || State college or university || US Air Force || US Army Corps of Engineers || Federal Institutional || Other Federal || Federal Bureau of Indian Affairs || Private || US Army || US Navy || ]|
VHB
Med_Type
Median Type
SmallInteger
2
0
0
Type of median on divided roadways. Median types typically reflect the security measures present on them. Positive barrier refers to the specific objects used to deter off-side traffic.
Massachusetts Department of Transportation Office of Transportation Planning
|dMedType [None || Curbed ||Positive barrier - Unspecified ||Unprotected ||Positive barrier – Flexible ||Positive barrier – Semi-Rigid ||Positive barrier – Rigid || ]|
VHB
MPO
MPO
SmallInteger
2
0
0
A transportation planning and policy making organization composed of state and local officials
for the purpose of regional coordination. Some of the regions identified are Rural Transportation
Planning Organizations* not MPOs.
Massachusetts Department of Transportation Office of Transportation Planning
|dmMPO [Berkshire Region Metropolitan Planning Organization || Boston Region Metropolitan Planning Organization || Cape Cod Metropolitan Planning Organization || Central MA Metropolitan Planning Organization || Franklin Regional Council of Governments || Martha’s Vineyard Commission || Merrimack Valley Metropolitan Planning Organization || Montachusett Metropolitan Planning Organization || Nantucket Planning and Economic Development Commission || Northern Middlesex Council of Governments || Old Colony Metropolitan Planning Organization || Pioneer Valley Metropolitan Planning Organization || Southeast MA Metropolitan Planning Organization || ]|
VHB
mpo_text
MPO Text
String
512
0
0
MPO Text Description
VHB
The set of data values is not represented by a domain
MA_PA_FLAG
Risk Factor for Functional Class - MA or PAO
Integer
4
0
0
Risk Factor for Functional Class - MA or PAO
VHB
The set of data values is not represented by a domain
Rd_Seg_ID
Road Segment ID
Integer
4
0
0
A legacy identifier from previous versions of the Road Inventory. This field refers to subsections
of road lengths, typically between two intersections.
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
Route_ID
Route ID
String
16
0
0
A unique identifier assigned to each road in Massachusetts. The Route ID consists of three parts:
A route system identifier, a numeric code, and a directional value (E.g. L000001 NB).
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
Route_Number
Route Number
String
10
0
0
The official route number designation; need not be exclusively numeric (E.g. 1A, 2A, 8A-L).
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
Route_System
Route System
String
3
0
0
The route system is method of categorization to broadly describe a route
I = Interstate
• US = US Highway
• SR = State Route
• R = Ramp
• L = Local Route
• B = Bike/Pedestrian Route
• M = Miscellaneous
• N = Non-numbered
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
St_Name
Street Name
String
100
0
0
The name of a road. Names in this field are written in all capital letters and their type spelled
out in full. (E.g. MAIN STREET, EAST QUINN ROAD).
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
To_Measure
To Measure
Double
8
0
0
To Milepost
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
TOWN
Town
String
21
0
0
Town the Segment is In
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
Urban_Type
Urban Type
SmallInteger
2
0
0
This field describes population density based on the 2010 Census delineations of urban areas, urban clusters, and rural populations. 1 = Large Urbanized Area Densely settled territory that contains 200K people or more • 2 = Small Urbanized Area Densely settled territory that contains at least 50K people but fewer than 200K people • 3 = Large Urban Cluster Densely settled territory that contains at least 5K people but fewer than 50K people • 4 = Small Urban Cluster Densely settled territory that contains at least 2.5K people but fewer than 5K people • 5 = Rural
Massachusetts Department of Transportation Office of Transportation Planning
|dUrbanType [Large Urbanized Area Densely settled territory that contains 200K people or more || Small Urbanized Area Densely settled territory that contains at least 50K people but fewer than 200K people || Large Urban Cluster Densely settled territory that contains at least 5K people but fewer than 50K people || Small Urban Cluster Densely settled territory that contains at least 2.5K people but fewer than 5K people || Rural || ]|
VHB
RS_RANK
Segment Ranking – Risk Score Ranking, Statewide
VHB
The set of data values is not represented by a domain
Double
8
RS_RANK
0
0
RS_CAT
Category (Primary or Secondary) – Risk Category, Statewide
VHB
The set of data values is not represented by a domain
String
255
RS_CAT
0
0
RS_TOT
Total Risk Score – Total Risk Score
VHB
The set of data values is not represented by a domain
Double
8
RS_TOT
0
0
UNDIV_FLAG
Risk Factor for Undivided Segment
Integer
4
0
0
Risk Factor for Undivided Segment
VHB
The set of data values is not represented by a domain
UNIQUE_ID_2
Unique ID
Integer
4
0
0
Unique ID
VHB
The set of data values is not represented by a domain
RS_TOTP
Normalized Risk Score – Normalized Risk Score (as a Percentage)
VHB
The set of data values is not represented by a domain
Double
8
RS_TOTP
0
0
MPO_OLD_DRIVE_DENSE_FLAG
Risk Factor for Older Driver Density
Integer
4
0
0
Risk Factor for Older Driver Density
VHB
The set of data values is not represented by a domain
CENTERLINE_MI_INT_PERC
Risk Factor for Average Block Length
Double
8
0
0
Risk Factor for Average Block Length
VHB
The set of data values is not represented by a domain
DIFF_IND_LIV_PERC
Risk Factor for Senior Independent Living Difficulty
Double
8
0
0
Risk Factor for Senior Independent Living Difficulty
VHB
The set of data values is not represented by a domain
NUM_SENIOR_TRANS_PERC
Risk Factor for Number of Senior Transportation Providers
Double
8
0
0
Risk Factor for Number of Senior Transportation Providers
VHB
The set of data values is not represented by a domain
FROMADDRESS
From Address
String
255
0
0
From address
VHB
The set of data values is not represented by a domain
TOADDRESS
To Address
String
255
0
0
To Address
VHB
The set of data values is not represented by a domain
Seg_length
Segment Length in Miles
Double
8
0
0
Segment Length in Miles
VHB
The set of data values is not represented by a domain
jur_text
Jurisdiction Text
String
255
0
0
Jurisdiction Text
VHB
The set of data values is not represented by a domain
fc_text
Functional Class Text
String
255
0
0
Functional class text
VHB
The set of data values is not represented by a domain
ft_text
Facility Type Text
String
255
0
0
Facility Type Text
VHB
The set of data values is not represented by a domain
Shape_Length
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Double
8
Shape_Length
0
0
Simple
FALSE
294824
TRUE
TRUE