Road Inventory Data Collection Re-engineeringRoad Inventory Data Collection Re-engineering

• Collected Data Items (more than 50 items):– Street Names.– Pavement width, number of lanes, etc.– Bike path, sidewalk, etc.– Signs including Stop sign, Speed Limit, Milepost, etc. – Traffic signals– Intersection, interesting street names, etc.

• Features include:– Point features; Linear features

• Technologies to be used:– Database management, GPS/GIS real-time navigation

and mapping, Real-time Distance Measuring Instrument (DMI), Digital Camera, and image processing.

Milepoint

A vehicle moving speed 30-40 miles per hour.

Re-engineering Road Characteristics Data Collection – current operation

Manual Quality Control

Manual Data EntryDatabase

Choose the routes to collect data with maps

Carry hard-copy maps and pre-inventory for data collection.

Collect RC data on Highway

Record data manually in the field

Goal of Project: Improve Data Quality, Operation Efficiency, and Safety

More than 100 data items to be collected at one milepoit (Number of lanes, pavement width, overpass, sidewalk, bike path, signs

such as stop and speed limit signs, signals…etc.)

Re-engineering Road Characteristics Data Collection – future operation

Hardware systems

Integrated System

1. Laptop Computer

2. Global Position System

3. Distance Measurement Instrument

4. Other advanced technologies (voice command system, digital camcorder, wireless…etc.)

Software systems

1. GPS/GIS real-time mapping and navigation capabilities

2. Real-time data quality control for field data collection.

3. Database Management system

4. Other advanced technologies (real-time image processing and feature recognition algorithms and functions and voice recognition)

Image processing & feature recognition algorithms

Prototype - RC Data Collection System (Cont.)Prototype - RC Data Collection System (Cont.)

Database Management componentGIS/GPS Real-time Navigation and

Mapping component

A Milepoint for RC Inventory

Detailed RC Inventory at a

milepoint