TRANSPORTATION DATA SOURCES IRTPO TAC OCTOBER 10, 2019 - - PowerPoint PPT Presentation

TRANSPORTATION DATA SOURCES

IRTPO TAC – OCTOBER 10, 2019

• Goal is to introduce ‘new’ ways of collecting transportation data that can be used to benefit Island County

planning efforts

• Typical Data Collection Methods and their limitations
• ‘New’ Methods:
• INRIX
• Streetlight Data
• Others Data Sources
• Google
• Wejo
• MioVision
• Comparison Study
• Q&A (please ask questions at any time)

PRESENTATION OVERVIEW

• Manual observations
• Video Counts
• Pneumatic Tube Counters
• Floating Car Surveys
• Bluetooth / WiFi Readers

TYPICAL METHODS OF DATA COLLECTION

• Manual observations
• cheap but limited scope of data, hard to scale
• Video Counts
• cheap but limited scope of data, hard to scale
• Pneumatic Tube Counters
• cheap, slightly more data, can be inaccurate, no

O/D info

• Floating Car Surveys
• easy to understand, can get expensive, limited

scope

• Bluetooth / WiFi Readers
• expensive, limited geography, requires hardware

TYPICAL METHODS OF DATA COLLECTION

• Manual observations
• Video Counts
• Pneumatic Tube Counters
• Floating Car Surveys
• Bluetooth / WiFi Readers

TYPICAL METHODS OF DATA COLLECTION

• These data sources have been the

backbone of planning decision making, and are mostly based on 1 to 3 days of data

• New data is based on location data
• In vehicle systems (GPS)
• Cell phones (GPS & LBS)
• No Data Collection Time
• No Roadside Equipment
• Based on ‘representative sample’ of

traffic

• Data available for any time period

NEW DATA SOURCES

INRIX

INRIX Provides: Speed and Roadway Travel Times

• Types of Questions to ask:
• How fast/slow do vehicles travel along a given roadway?
• How do speeds vary throughout the day?
• How do speeds vary by day of week, by month, by season, by year?
• Where do slowdowns occur along a given roadway?
• What happened during a specific roadway incident or period of congestion?

INRIX

• INRIX Data – SHOW GRAPHICS - PAUL
• On-board vehicle navigation
• Allows for travel time / speed info
• Starting to do O/D

INRIX – SAMPLE SPEED DATA

INRIX – CONGESTION SCAN

• INRIX Data – SHOW GRAPHICS - PAUL
• Strengths / Weaknesses

INRIX – BOTTLENECK EVENTS

• Data Available across the

county on major and minor roadways

• Data typically not available

for roadways with small daily traffic totals (local roads)

INRIX – DATA AVAILABILITY IN ISLAND COUNTY

• Pros
• Offers historic and semi real-time data on travel time, speeds, and other congestion metrics
• Combines real-time and historic data and offers a confidence interval for travel time and

speed reports

• Web based and requires no special hardware or software
• Suitable for real-time traffic operations and management
• Cons
• XD Segments don’t always align with desired study roadway
• Raw Data inaccessible – how many data points?
• No Count Data – Only Speed Information available
• Cost
• Per Project (cost per roadway mile or given geography / time period)

PROS & CONS OF INRIX

STREETLIGHT DATA

• Types of Questions to ask:
• How many vehicles/ped/bikes/cars travel on a roadway?
• Where do vehicles travel to/from on a given roadway?
• Where do trucks travel to/from a specific location?
• Where do pedestrian and bicycles travel to/from?
• What routes do vehicles take to get between an origin and destination?
• How do specific travel patterns change by hour, day of week, month, or seasonally?

STREETLIGHT DATA

STREETLIGHT DATA

What roads do WB vehicles from SR 532 turn onto in the PM peak?

STREETLIGHT DATA

• Where do vehicles entering Whidbey Island in the morning from ___ go?

Clinton Ferry Coupeville Ferry Deception Pass

• More detailed information available about the trips selected

STREETLIGHT DATA

• Pros
• Suitable for OD studies, historic travel time at 1-hour granularity level, and other planning

studies

• Enables insight into trip purpose and other metrics not available on other platforms
• Able to estimate counts
• Web based and requires no special hardware or software
• Cons
• Less suitable for real-time traffic operations and management
• Provides no access to raw data or processing techniques
• Requires knowledge of online user interface and analysis process
• Cost
• Subscription (annual fee for a specific geography)
• Per Project (cost per analysis zone)

PROS & CONS OF STREETLIGHT

• Google Maps
• Extract travel time and speed data

from their platform using their API

• Pricing based on per data unit
• Wejo
• Anonymized location data (include

speed, direction) at 3 second intervals provided directly by vehicle OEMs

• GM and others
• MioVision (intersection based)
• Plug in to traffic cabinet and camera
• Video AI counts, access via web app

OTHER DATA SOURCES

IRVINE, CA – CASE STUDY

IRVINE – CASE STUDY

50 100 150 200 250 300 350 400 0:00 2:30 5:00 7:30 10:00 12:30 15:00 17:30 20:00 22:30

Travel Time (sec)

Travel Time Comparison

• Many new platforms and ways to access transportation data
• Pros and cons to each – but flexible to meet different needs
• These new data sources provide larger windows of data
• Allows for more flexible ways to view the data
• Data availability is constantly improving
• Some platform require analytic skills, some are very user friendly
• Data may not be as expensive as you think

SUMMARY

Q&A

Paul Sharman, PE

Transportation Engineer

425.896.5262

Paul.Sharman@transpogroup.com

THANK YOU