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Adaptive signal control integrated with freeway ramp meters in Glasgow, Scotland improved network travel times by 10 percent.

The evaluation project considered the impacts of TUC on the entire urban network as well as areas in and around the deployment area. The study area included 44 links. Thirty-nine (39) of these were…

09/10/2002

Taxonomy: Adaptive Signal Control, Ramp Metering

A survey of drivers in Glasgow, Scotland, found that 59 percent of respondents thought that ramp metering was very helpful or fairly helpful.

The evaluation project considered the impacts of TUC on the entire urban network as well as areas in and around the deployment area. The evaluation was completed in March of 1998.SURVEY RESULTSThree…

09/10/2002

Taxonomy: Ramp Metering

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that the number of commuters who supported a complete ramp meter shutdown declined significantly from 21 percent in 2000 to about 14 percent in 20

FINDINGSThe number of commuters who supported a complete shutdown declined significantly from 21 percent in 2000 to about 14 percent in 2001. This change was attributed to ramp meter control…

07/08/2002

Taxonomy: Ramp Metering

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that the number of crashes recorded for the interim period with reduced ramp metering capacity was 15 percent higher that the average number of cr

FINDINGS The number of crashes recorded for the first seven months of 2001 (interim period with reduced ramp metering capacity) was 15 percent higher that the average number of crashes measured for…

07/08/2002

Taxonomy: Ramp Metering

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that freeway travel speeds decreased 5 to 10 percent and freeway travel times increased 5 to 10 percent between 2000 and 2001.

FINDINGSThe following were reported in the Phase II report:Overall, freeway travel speeds decreased 5 to 10 percent between 2000 and 2001.Overall, freeway travel times increased 5 to 10 percent…

07/08/2002

Taxonomy: Ramp Metering

A simulation study in Minneapolis-St. Paul estimated that ramp metering saved 2 to 55 percent of the fuel expended at each ramp.

SIMULATION RESULTSRamp metering reduced the number of acceleration-deceleration cycles and smoothed traffic flow. Fuel savings at each ramp meter ranged from 2 to 55 percent depending on ramp…

06/13/2002

Taxonomy: Ramp Metering

A simulation study in Minneapolis-St. Paul estimated that ramp metering decreased total system travel time by 6 to16 percent and increased average mainline speeds by 13 to 26 percent.

SIMULATION RESULTSRamp metering decreased total system travel time by 6 to16 percent. Ramp metering increased average mainline speeds by 13 to 26 percentThe number of stops was relatively low on the…

06/13/2002

Taxonomy: Ramp Metering

A study found that the benefit-to-cost ratio of the Minneapolis-St. Paul ramp metering system was 15:1.

FINDINGSAnalysis of the benefits and costs of the ramp metering system showed that when the costs of the entire congestion management system (including changeable message signs, traveler information…

04/19/2002

Taxonomy: Ramp Metering

Volume decreased by 9 percent and peak period throughput was reduced by 14 percent when the ramp metering system on Minneapolis-St. Paul freeways was deactivated.

FINDINGSResults indicated that without ramp meters there was a 9 percent reduction in freeway volume and a 14 percent reduction in peak period throughput.

04/19/2002

Taxonomy: Ramp Metering

Net annual vehicle emissions increased by 1,160 tons and fuel consumption decreased by 5.5 million gallons when the ramp metering system on Minneapolis-St. Paul freeways was shut down.

FINDINGSResults indicated that without ramp meters there was: A net annual increase in emissions of 1,160 tons without ramp meteringA decrease in fuel consumption without ramp metering of 5.5 million…

04/19/2002

Taxonomy: Ramp Metering

Displaying 31 - 40 of 51

Adaptive signal control integrated with freeway ramp meters in Glasgow, Scotland improved network travel times by 10 percent.

A survey of drivers in Glasgow, Scotland, found that 59 percent of respondents thought that ramp metering was very helpful or fairly helpful.

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that the number of commuters who supported a complete ramp meter shutdown declined significantly from 21 percent in 2000 to about 14 percent in 20

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that the number of crashes recorded for the interim period with reduced ramp metering capacity was 15 percent higher that the average number of cr

In Minneapolis-St.Paul, an evaluation of the effectiveness of ramp meters on four test corridors showed that freeway travel speeds decreased 5 to 10 percent and freeway travel times increased 5 to 10 percent between 2000 and 2001.

A simulation study in Minneapolis-St. Paul estimated that ramp metering saved 2 to 55 percent of the fuel expended at each ramp.

A simulation study in Minneapolis-St. Paul estimated that ramp metering decreased total system travel time by 6 to16 percent and increased average mainline speeds by 13 to 26 percent.

A study found that the benefit-to-cost ratio of the Minneapolis-St. Paul ramp metering system was 15:1.

Volume decreased by 9 percent and peak period throughput was reduced by 14 percent when the ramp metering system on Minneapolis-St. Paul freeways was deactivated.

Net annual vehicle emissions increased by 1,160 tons and fuel consumption decreased by 5.5 million gallons when the ramp metering system on Minneapolis-St. Paul freeways was shut down.

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INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE

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