20211208
15513900
1.0
FALSE
msaFatalInjuryStateRank
002
34920.714700
329851.375100
778110.934700
959485.530200
1
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001
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20210824
10592300
20210824
14200200
150000000
5000
FGDC
dataset
Bonnie Polin
Mass DOT Highway Safety and Engineering
Manager
857-368-9639
1010 Park Plaza Suite 7210
Boston
MA
02116
US
bonnie.polin@dot.state.ma.us
20210824
ArcGIS Metadata
1.0
File Geodatabase Feature Class
Excess Expected All Crashes 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 – Crash Based data can be used to access and visualize Massachusetts top crash locations based on segments exceeding the predicted number of crashes. The information is based on the latest 5 years of closed geocoded crashes (2013-2017).Safety Performance Functions (SPFs), based on the specific roadway network and crash data, have been developed to determine the ranking of the segments. For additional information and descriptions visit MassDOT SPF Development and Ranking Methodology. The data in this module only contains segment crash results. For the methodology in determining top crash intersection locations and to view the map please refer to MassDOT's Top crash locations and maps.</SPAN></P></DIV></DIV></DIV>
The crash-based network screening data is based on excess average crash frequency with an Empirical Bayes (EB) adjustment for five facility types on collectors and arterials: rural two-lane undivided segments, urban four-lane divided segments, urban four-lane undivided segments, urban two-lane undivided segments and urban two-lane divided segments for all crashes. Segments are ranked from most to least excess crash frequency, calculated as the difference between expected and predicted average crash frequency, on both the Statewide and MPO/RPA level. This data identifies sites in the Top 5% and then the next 10% of all segments by statewide.
VHB, MassDOT Highway Traffic Safety
Bonnie Polin
Mass DOT Highway Safety and Engineering
Manager
857-368-9639
1010 Park Plaza Suite 7210
Boston
MA
02116
US
bonnie.polin@dot.state.ma.us
ISO 19115 Topic Categories
transportation
IMPACT
ANALYSIS
CRASHBASE
transportation
IMPACT
ANALYSIS
CRASHBASE
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This data is in the public domain and therefore can be used by anyone for any purpose. MassDOT shall not be held liable for any errors in this data. This includes errors of omission, commission, errors concerning the content of the data, and relative and positional accuracy of the data. This data cannot be construed to be a legal document. Primary sources from which this data was compiled must be consulted for verification of information contained in this data.</SPAN></P></DIV></DIV></DIV>
Esri ArcGIS 12.4.2.19948
true
-73.520312
-69.910709
42.885994
41.235932
Crash years 2013-2017
2013-01-01
2018-01-01
1
-73.520312
-69.910709
42.885994
41.235932
Measure
Measure
Several sources: Massachusetts Department of Transportation Road Inventory File 2019, 2010 Census data, 2013-2017 RMV crash report data
First edition
Several process steps are taken in the data model and analysis used to develop this data available in the methodology reports.
2021-03-01
60079
EPSG
2.1(3.0.1)
Excess Expected Fatal and Injury Crashes by Statewide Ranking
Excess Expected Crash Statewide Ranked Fatal and Injury Crash Based Risk Segments
MassDOT Traffic Safety
Feature Class
60079
OBJECTID
OBJECTID
Internal feature number.
Esri
OID
4
0
0
Sequential unique whole numbers that are automatically generated.
siteID
ID
Screening engine segment ID
VHB
Integer
4
0
0
The set of data values is not represented by a domain
F_Class
Functional Class
"Functional Class (F_Class)
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
SmallInteger
2
0
0
|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 || ]|
Massachusetts Department of Transportation Office of Transportation Planning
MEAN_startMP
Beginning Point
Double
8
0
0
Beginning milepost
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
MEAN_endMP
End Point
Double
8
0
0
End milepost
Massachusetts Department of Transportation Office of Transportation Planning
The set of data values is not represented by a domain
SUM_score
Excess Expected Crashes
Double
8
0
0
Excess expected crashes on the segment
VHB
The set of data values is not represented by a domain
SUM_crashCount
# Observed Crashes
Double
8
0
0
Number of observed crashes
VHB
The set of data values is not represented by a domain
SUM_obsCrashRate
Observed Crash Rate
Double
8
0
0
Observed crash rate
VHB
The set of data values is not represented by a domain
SUM_predCrashR
# Predicted Crashes
Double
8
0
0
Number of predicted crashes
VHB
The set of data values is not represented by a domain
SUM_expCrashRa
# Expected Crashes
Double
8
0
0
Number of expected crashes
VHB
The set of data values is not represented by a domain
AADT
AADT
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
Integer
4
0
0
The set of data values is not represented by a domain
DistrictNa
District Name
The MassDOT Highway District boundary the segment is located within
Massachusetts Department of Transportation Office of Transportation Planning
String
10
0
0
The set of data values is not represented by a domain
SPF_Fac_Type
Facility Type
SPF Facility Type Text
VHB
String
255
0
0
|dmFacilityTypeCrash [Rural 2-Lane Undivided || Urban 2-Lane Divided || Urban 2-Lane Undivided || Urban 4-Lane Divided || Urban 4-Lane Undivided || ]|
VHB
RANK
State FI Rank
Double
8
0
0
Segment ranking for FI crashes
VHB
The set of data values is not represented by a domain
TOP5_NEXT10
State FI Category
String
255
0
0
Ranking category for FI crashes, statewide
VHB
The set of data values is not represented by a domain
Jurisdictn
Jurisdiction
"""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
String
1
0
0
|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 || ]|
Massachusetts Department of Transportation Office of Transportation Planning
OBJECTID_1
OBJECTID
Integer
4
0
0
Object ID
Esri
The set of data values is not represented by a domain
City
CITYID
"City Numeric ID The city in which a road is located. City ID numbers are assigned alphabetically with Abington as
1 and Yarmouth as 351 with the exception of Aquinnah at 104"
Massachusetts Department of Transportation Office of Transportation Planning
SmallInteger
2
0
0
The set of data values is not represented by a domain
SHAPE_Leng
SHAPE_Leng
Double
8
0
0
Shape length
Esri
The set of data values is not represented by a domain
jur_text
Jurisdiction Text
String
255
0
0
Text description of jurisdiction
VHB
The set of data values is not represented by a domain
fc_text
Functional Class Text
String
255
0
0
Functional class text description
VHB
The set of data values is not represented by a domain
ft_text
Facility Type Text
String
255
0
0
Facility type text description
VHB
The set of data values is not represented by a domain
TOWN
City Name
The town boundary the segment is located within
Massachusetts Department of Transportation Office of Transportation Planning
String
21
0
0
The set of data values is not represented by a domain
Shape
Shape
Feature geometry.
Esri
Geometry
0
0
0
Coordinates defining the features.
Route_ID
Route ID
"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
String
255
0
0
The set of data values is not represented by a domain
Route_System
Route System
"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
String
255
0
0
The set of data values is not represented by a domain
Rd_Seg_ID
Route Segment ID
"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
String
255
0
0
The set of data values is not represented by a domain
Seg_length
Segment Length
Segment Length (Miles)
VHB
Double
8
0
0
The set of data values is not represented by a domain
ExcExpCr
Total Excess Expected Crashes 2013-2017
Total Excess Expected Crashes, 2013-2017 based on the difference between expected crashes and predicted crashes
VHB
Double
8
0
0
The set of data values is not represented by a domain
MPO
Metropolitan Planning Organization
MPO Numeric ID
VHB
SmallInteger
2
0
0
|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
Route_Number
Route Number
The official route number designation; need not be exclusively numeric (E.g. 1A, 2A, 8A-L)
Massachusetts Department of Transportation Office of Transportation Planning
String
255
0
0
The set of data values is not represented by a domain
Urban_Type
Urban Type
"Urban Type (Urban_Type)
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
SmallInteger
2
0
0
The set of data values is not represented by a domain
St_Name
Street Name
Street Name
Massachusetts Department of Transportation Office of Transportation Planning
String
255
0
0
The set of data values is not represented by a domain
TO_ADDRESS
To Address
String
255
0
0
Closest geolocated address to the start of the segment, includes Number, Street Name, and Town Name
VHB
The set of data values is not represented by a domain
FROM_ADDRESS
From Address
String
255
0
0
Closest geolocated address to the end of the segment, includes Number, Street Name, and Town Name
VHB
The set of data values is not represented by a domain
Shape_Length
Shape_Length
Length of feature in internal units.
Esri
Double
8
0
0
Positive real numbers that are automatically generated.
Simple
FALSE
60079
TRUE
TRUE