Title: Work Zone Data in Ohio
1Work Zone Data in Ohio
- Dave Holstein, Administrator
- Office of Traffic Engineering
2Work Zone Data in Ohio
- Why do we worry about work zone data
- We can use it to learn from and improve and
- 23 CFR 630 Subpart J requires it Shall
continually pursue improvement of wz safety and
mobility by analyzing work zone crash and
operational data from multiple projects.
3Work Zone Data in Ohio
- 3 Categories of WZ data in Ohio
- Historic Data (primarily crash)
- Near Real-time (also crash)
- Real-time (mobility/speed)
4Work Zone Data in Ohio
- 3 Categories of WZ data in Ohio
- Historic Data (primarily crash)
- Near Real-time (also crash)
- Real-time (mobility/speed)
5Work Zone Data in Ohio - Historic
- Tells how we are doing with safety
6Work Zone Data in Ohio - Historic
- Tells how we are doing with safety
With
Crash Rate Accidents/Million Vehicle Miles
7Work Zone Data in Ohio - Historic
2006 Example of Work Zone vs. Pre-Work Zone Crash
Rates (Previous slide)
8Work Zone Data in Ohio - Historic
- Tells how we are doing with safety
Ohio
9(No Transcript)
10Work Zone Data in Ohio - Historic
- Tells how we are doing with safety
Problems?
Work Zone vs. (Non Work Zone) Fatal Crash
Statistics
11Work Zone Data in Ohio
- 3 Categories of WZ data in Ohio
- Historic Data (primarily crash)
- Near Real-time (also crash)
- Real-time (mobility/speed)
12WZ Data in Ohio Near Real-Time
Finds Problems in the Field in Time to Make
Changes
Mile 16.2 16.99 Non WZ 7 Month Avg. WZ 3 Month
Total BIG PROBLEM !!
13WZ Data in Ohio Near Real-Time
14WZ Data in Ohio Near Real-Time
2008 Work Zones Monitored for Crashes
15Work Zone Data in Ohio
- 3 Categories of WZ data in Ohio
- Historic Data (primarily crash)
- Near Real-time (also crash)
- Real-time (mobility/speed)
16WZ Data in Ohio Real-Time
- New effort in Ohio
- LEASING speed travel time information
- Contract advertised and awarded (low bid)
separately from the construction project - First Deployment is in Dayton Ohio to support
I-75 reconstruction project
17WZ Data in Ohio Real-Time
- Dayton construction project has potential to
effect entire region so speed/travel time
information is being gathered for alternate
routes as well as the zone itself. - Total Cost 132,000/year (entire Dayton metro
area) - 100 Sensor Locations _at_ 110/month
- Just data no equipment no electric no
communications
18WZ Data in Ohio Real-Time
- Small scale example
- 8 mile work zone
- Sensor spacing ½ mile in transition area and 1
mile in work area - Approximately 10 sensors covers both directions
(depending on median width and mounting locations
worst case 20 for both directions) - Cost 1,100/mo (10 sensors)
- Gives real time data via cellular broadband that
can be used internally or externally via the web
19WZ Data in Ohio Real-Time
The Work Zone
20Work Zone Data in Ohio
- Questions?
- Thank You
- Dave Holstein
- State Traffic Engineer, Ohio DOT
- 614-644-8137
- Dave.holstein_at_dot.state.oh.us