report for gis subsystem for a new approach to assessing road
TRANSCRIPT
Report for GIS Subsystem for A New Approach to Assessing Road User Charges
April, 2002
Objective: Develop a new algorithm (co-location miner for line strings) for the selection of field test sites where two or more roads are too close to be distinguished by GPS in face of the error in maps. Using this new algorithm, select some urban test sites close to Twin Cities metropolitan. We’ll also statistically analyze the co-location roads. e.g. for each road type, we calculate total number of miles, number of miles affected by co-location problem, total number of road segments and number of segments affected by co-location problem.
Accomplishments: We have made progress of selecting road test sites for urban test, analizing road type distribution, and obtaining digital maps from other sources like Tele Atlas, and PCMiler.
1. Route Selection
West of Minneapolis test route: We select some roads affected by co-location pattern in west of Minneapolis, e.g. US169(south)394(east)100(south)62(east)I35W(north). Along each highway, there are two or more roads are close. So we can conduct road test by GPS in face of the error in digital road map. See Appendix 1 for this routes.
Southwest of Minneapolis test route: We select another test route to conduct road test in southwest of Minneapolis. The test route is 394(east)US169(south)7(east)100(South)494(east)I35W(south).
2. Road Type Distribution
Statistical summary: We calculated the distribution ratio for each road type affected by the co-location problem in the Twin Cities metropolitan. The distribution of different road types is illustrated in Figure 3 in Appendix. From the statistical distribution, we know that the road type 9 (unknown) affected by co-location pattern counts 57% over the total road types, and the road type 2 (primary highway, state route) counts 12.6% over the total road types affected by the co-location problem.
3. Digital Maps Acquisition
PC*Miler Street 4.0. We contacted with Wes Robberts at ALK Technologies, Inc. to purchase PC *Miler Streets 4.0, which is the transportation and logistics industry's leading software for street level routing, mileage and mapping solutions. Featuring the largest and most accurate highway and street-level databases in the industry. See Appendix 3 for the product description of PC*Miler 4.0.
Tele Atlas MultiNet (USA) data for Hennepin County, MN and St. Louis County, MN.Tele Atlas MultiNet is by far the richest digital mapping database. It contains detailed traffic and address attribute information, unparalleled positional accuracy, superior geocoding capability, and a multiplicity of attributes.
Appendix
1. West of Minneapolis test route
2. Southwest of Minneapolis test route
4. Road Type Distribution
Road Type Discription:0 High-speed ramp. A freeway entrance or exit that has large-radius curves and does not require a driver to slow down. Example: a ramp connecting one freeway to another.
1 Interstate highway, U.S. highway, or other limited access highway. A road for which access is usually by interchanges; it usually has no traffic lights or stop signs.
2 Primary state highway, subsidiary interstate highway, or subsidiary U.S. highway. Typically amulti-lane road, usually divided. It occasionally has traffic lights and generally has a high speed limit (50 miles per hour or higher).
3 Arterial. A road that connects high-volume roads and highways. In urban areas, this is a medium to high-volume road. It may be a divided multi-lane road. It generally has lights at intersections and no stop signs. The speed limit is normally about 40 miles an hour.
4 Collector. A road that collects traffic from light duty roads and feeds it to arterials and highways.
5 Light duty. In urban areas, this is generally a local road. In rural areas, it is a minor road providing access to land parcels.
6 Alley or unpaved road. A drivable alley or unpaved road. In rural areas, it is generally a dirt road or recreational vehicle trail.
8 Railroad. A railroad or rail transit line.
9 Low-speed ramp. A highway entrance or exit that requires a driver to slow down. Example: a cloverleaf ramp.
M Restricted access. A road with restricted access, such as a city-center road dedicated to pedestrians and buses or to commercial access.
P Political boundary. Any political or socioeconomic boundary that does not follow a physical feature such as a road or a river.
NOTE: A boundary that is also a physical feature is classified as the physical feature.
S Shoreline. A shoreline of a water body such as a lake, sea, ocean, river, or stream.or streams too small to be represented as an area feature, the shoreline represents the entire water feature.
U Unidentified. An observed but unidentified feature, usually something visible on an Aerial photograph but not well identified. Typically an airport runway, a racetrack, or power lines. This feature may be present in geocode theme files.
V Driveway or private road. A driveway or road on private property. This feature may be present in geocode theme files.
W Walkway. A non-drivable feature that has a name and may have addresses. This feature may be present in geocode theme files.
X Shipping route. The approximate path of a ferry, hydrofoil, or similar vehicle that travels on water. This feature may be present in geocode theme files.
Y Y-line. An artificial boundary used to partition a large 2-cell into smaller, more manageable regions. This feature may be present in geocode theme files.
5. ALK's PC*MILER/STREETS 4.0 is a web-enabled online street-level routing mileage and mapping software also equipped with the Comdata GeoFUEL truck stop network. which allows dispatchers and drivers to identify and route to over 4,000 facilities across the country. PC*MILER/STREETS include all of the North American point-to-point highway routing, nationwide street-level routing and mapping, and unlimited street-level stop optimization. This software is a Windows-based application and is also compatible with the AS/400 environment. UNIX, mainframe and other platform compatibility is available through a TCP/IP interface.
Contact information:Http://www.pcmiler.comPhone: 1-800-377-MILE.
Wes RobbertsMarketing Support ManagerALK Technologies, Inc.1000 Herrontown RoadPrinceton, NJ 08540
Phone: 1-800-377-6453 ext 206Fax: 609-252-8108
6. Tele Atlas MultiNet purchasing contact information.
Tele Atlas North America, Inc.1605 Adams Dr.Menlo Park, CA 94025-1448Toll-Free Phone: 800-765-0555Phone: 650-328-3825 Webmaster: [email protected]: [email protected]
Sales
Toll-free Phone: 800-295-6277Phone: 650-328-3825Fax: 650-617-0163Email: [email protected]
Technical Support
Toll-free Phone: 800-765-0555Phone: 650-328-3825Fax: 650-617-0139Email: [email protected]