Tools

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001 ocn416752668;

003 OCoLC;

005 20141212064852.0;

006 m o d f ;

007 cr cn| ;

008 090626s2008 dcubd obt f000 0 eng d;

027 a| FHWA-HOP-09-019;

029 1 a| CBTc| /p266401coll4t| CNTNT;

035 a| (Sirsi) o416752668;

043 a| n-us---;

049 a| ERE#;

074 a| 0982-G-53 (online);

086 0 a| TD 2.30/19:09-019;

088 a| FHWA-HOP-09-019;

100 1 a| Jung, Soojung.?| UNAUTHORIZED;

245 10 a| Roadway network productivity assessment :b| system-wide analysis under variant travel demand /c| Soojung Jung, Karl Wunderlich.;

260 a| Washington, D.C. :b| U.S. Dept. of Transportation, Federal Highway Administration,c| 2008.;

300 a| vi, 20 pages :b| digital, PDF file (412 KB) with color charts, color maps;

336 a| text2| rdacontent;

337 a| computer2| rdamedia;

338 a| online resource2| rdacarrier;

516 a| Text document in PDF format.;

538 a| Mode of access: World Wide Web.;

538 a| System requirements: Adobe Acrobat Reader.;

513 a| Final report.;

500 a| Title from PDF title page (viewed on June 26, 2009).;

536 a| Performed by Noblis, Inc., sponsored by the Federal Highway Administration under contract no.b| DTFH61-05-D-00002.;

500 a| "November 2008.";

500 a| "FHWA-HOP-09-019.";

520 3 a| "The analysis documented in this report examines the hypothesis that the system-wide productivity of a metropolitan freeway system in peak periods is higher in moderate travel demand conditions than in excessive travel demand conditions. The approach in this effort characterizes system-wide productivity by aggregating link-level speed and traffic volume (count) data. The study utilized 2007 Los Angeles and Chicago traffic data (both flow and speed) archived as part of the Urban Congestion Report (UCR) databases. In addition, an extensive archive of incident, work zone and weather data were available to identify the underlying conditions related to congestion patterns and bottleneck locations in the network. System-wide travel demand, delay and productivity were estimated for two Mondays in September-October 2007. One day was the worst congested Monday (September 10 2007) during the two-month period and the other Columbus Day (October 8 2007). Our a priori expectation was that travel demand on Columbus Day would be lower than on September 10 2007 since government and other workers receive a paid holiday on Columbus Day. Several measures of productivity based on a combination of flow and speed data were developed to capture system-level efficiencies of the freeway networks. The study suggests that higher system-level productivity and efficiency can be observed when travel demand is observed to closely match overall system capacity, resulting in less frequent onset and reduced duration of freeway breakdown conditions. By reducing demand and preventing congestion from taking hold, demand management through pricing or other mechanisms could recover the daily waste of time and drop in freeway system productivity that occurs on congested highways when traffic flow breaks down"--Technical report documentation page.;

504 a| Includes bibliographical references (p. 20).;

650 0 a| Highway capacityz| Illinoisz| Chicago.=| ^A182223;

650 0 a| Highway capacityz| Californiaz| Los Angeles.=| ^A182223;

650 0 a| Traffic flowz| Illinoisz| Chicago.=| ^A73458;

650 0 a| Traffic flowz| Californiaz| Los Angeles.=| ^A73458;

650 7 a| travel demand.2| trt;

650 7 a| Highway capacity.2| fast0| (OCoLC)fst00956575;

650 7 a| Traffic flow.2| fast0| (OCoLC)fst01154142;

700 1 a| Wunderlich, Karl.=| ^A1191365;

710 1 a| United States.b| Federal Highway Administration.=| ^A62022;

710 2 a| Noblis (Firm)=| ^A1191364;

856 40 u| https://purl.fdlp.gov/GPO/gpo47458;

949 a| Click on web addressw| ASISh| JOYNER94;

998 a| 3468352;

998 a| u3468352;

596 a| 1;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 3468352-1001l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 5/27/2014x| EDOCUMENTz| JERESOURCE;

Roadway network productivity assessment : system-wide analysis under variant travel demand / Soojung Jung, Karl Wunderlich.

Author/creator	Jung, Soojung
Other author	Wunderlich, Karl.
Other author	United States. Federal Highway Administration.
Other author	Noblis (Firm)
Format	Electronic
Publication Info	Washington, D.C. : U.S. Dept. of Transportation, Federal Highway Administration, 2008.
Description	vi, 20 pages : digital, PDF file (412 KB) with color charts, color maps
Supplemental Content	https://purl.fdlp.gov/GPO/gpo47458
Subjects	Highway capacity--Illinois. --Chicago. Highway capacity--California. --Los Angeles. Traffic flow--Illinois. --Chicago. Traffic flow--California. --Los Angeles.

Summary	"The analysis documented in this report examines the hypothesis that the system-wide productivity of a metropolitan freeway system in peak periods is higher in moderate travel demand conditions than in excessive travel demand conditions. The approach in this effort characterizes system-wide productivity by aggregating link-level speed and traffic volume (count) data. The study utilized 2007 Los Angeles and Chicago traffic data (both flow and speed) archived as part of the Urban Congestion Report (UCR) databases. In addition, an extensive archive of incident, work zone and weather data were available to identify the underlying conditions related to congestion patterns and bottleneck locations in the network. System-wide travel demand, delay and productivity were estimated for two Mondays in September-October 2007. One day was the worst congested Monday (September 10 2007) during the two-month period and the other Columbus Day (October 8 2007). Our a priori expectation was that travel demand on Columbus Day would be lower than on September 10 2007 since government and other workers receive a paid holiday on Columbus Day. Several measures of productivity based on a combination of flow and speed data were developed to capture system-level efficiencies of the freeway networks. The study suggests that higher system-level productivity and efficiency can be observed when travel demand is observed to closely match overall system capacity, resulting in less frequent onset and reduced duration of freeway breakdown conditions. By reducing demand and preventing congestion from taking hold, demand management through pricing or other mechanisms could recover the daily waste of time and drop in freeway system productivity that occurs on congested highways when traffic flow breaks down"--Technical report documentation page.
General note	Title from PDF title page (viewed on June 26, 2009).
General note	"November 2008."
General note	"FHWA-HOP-09-019."
Bibliography note	Includes bibliographical references (p. 20).
Report note	Final report.
Type of file/data	Text document in PDF format.
Funding information	Performed by Noblis, Inc., sponsored by the Federal Highway Administration under contract no. DTFH61-05-D-00002.
Technical details	Mode of access: World Wide Web.
Technical details	System requirements: Adobe Acrobat Reader.
Technical rpt#	FHWA-HOP-09-019
Technical rpt number	FHWA-HOP-09-019
GPO item number	0982-G-53 (online)
Govt. docs number	TD 2.30/19:09-019

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Roadway network productivity assessment : system-wide analysis under variant travel demand / Soojung Jung, Karl Wunderlich.

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