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	Kids.Net.Au - Encyclopedia > Ramp meter
		A ramp meter is a device that regulates traffic entering freeways according to current traffic conditions.
		Ramp Metering was first implemented in 1963 on the Eisenhower Expressway (Interstate 290) in Chicago, Illinois.
		In 2000, an experiment was conducted involving shutting off all 433 ramp meters in the Minneapolis-St. Paul area for eight weeks to test their effects.
	www.kids.net.au /encyclopedia-wiki/ra/Ramp_meter (273 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal
		Ramp meters in Mississauga, Ontario are designed in such a way so that if the queue waiting to enter the QEW grows to the point where it may back up onto city streets, the meter is lifted and all traffic entering the highway is able to move freely without waiting for the meter.
		Ramp metering is being introduced more widely in the UK after a pilot study by the Highways Agency [2] which concluded that ramp metering provides a net benefit under certain conditions - generally more congested junctions, but is ineffective or provides a net disbenefit under other conditions.
		Ramp metering is being introduced more widely in the Netherlands after a pilot study by the AVV Transport Research Centre which concluded that ramp metering can provide a small benefit for the traffic flow on the highway, leading to a higher capacity.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=ramp_meter (1630 words)

	WSDOT - Ramp Meters
		Ramp meters are stop-and-go traffic signals that control the frequency with which vehicles enter the flow of traffic on the freeway.
		Ramp meters also reduce the number of accidents that often occur when multiple vehicles merge onto the highway at the same time.
		This traffic data is continually fed to the ramp meters, which automatically alter their cycles to maximize traffic flow on both the ramps and the freeways.
	www.wsdot.wa.gov /Traffic/Congestion/rampmeters (384 words)

	Ramp Management & Control a Primer
		Ramp management is the “application of control devices, such as traffic signals, signing, and gates to regulate the number of vehicles entering or leaving a freeway, in order to achieve operational objectives”.
		Ramp metering is the application of traffic signal(s) installed at freeway entrance ramps to control the rate at which vehicles enter a freeway facility.
		Ramp meters may be programmed to release vehicles one at a time or in a small (usually two-vehicle) platoon to mitigate the impacts on freeway traffic flow of vehicles entering the freeway.
	ops.fhwa.dot.gov /publications/ramp_mgmt_handbook/primer/primer.htm (6926 words)

	Intelligent Transportation Systems - Ramp Metering
		Ramp metering is the use of traffic signals at freeway on-ramps to control the rate of vehicles entering the freeway.
		Ramps themselves must possess characteristics suitable for metering, namely the availability of vehicle storage space on the ramp, and adequate acceleration and merge distance downstream of the meter cordon line.
		Ramp meters along the I-10 Katy Freeway were installed in late 1996, and evaluated in early 1997 vs. the premetered conditions.
	www.calccit.org /itsdecision/serv_and_tech/Ramp_metering/ramprep_print.htm (6156 words)

	RTC \| Ramp Meters
		A ramp meter is a traffic signal, with only a red and a green light, which controls cars merging onto the freeway.
		Failing to stop at a ramp meter when it is in operation is a traffic violation similar to running a red light.
		Ramp meters are in use in more than 20 cities and 12 states.
	www.rtcsouthernnevada.com /rampmeters (771 words)

	Ramp Meters
		Ramp meters are traffic signals on freeway entrance ramps that release one or two vehicles at a time.
		Ramp meters are used in more than 33 metro areas in the United States, including Detroit, Seattle and Atlanta.
		Ramp meters also create smoother merging onto the freeway, eliminating some of the slow downs for vehicles traveling in the far right lane.
	pubserv.ci.columbus.oh.us /ramp_meters.htm (723 words)

	WSDOT - 2005 News - SR 16 Ramp Meter Start Times to Change Beginning in January
		His preliminary conclusions are that the meters have reduced the overall duration of congestion in the corridor.
		Crews will open a second lane on that ramp and operate it as a two-lane metered ramp (similar to how the 36th Street NW eastbound on-ramp is metered).
		Ramp meters are stop-and-go traffic signals placed on highway entrance ramps.
	www.wsdot.wa.gov /News/2005/12/Dec23SR16RampMeterTimes.htm (455 words)

	Ramp Management & Control Handbook Project Questions and Answers
		Ramp management strategies may be used to improve safety and mobility by improving the flow of vehicles that enter and exit a freeway facility.
		Ramp metering is the use of a traffic signal(s) deployed on a ramp to control the rate at which vehicles enter a freeway facility.
		Ramp metering can be an effective tool to address congestion and safety concerns that occur at a specific point or along a stretch of freeway.
	ops.fhwa.dot.gov /publications/ramp_mgmt_handbook/faqs/ramp_faqs.htm (2900 words)

	Preliminary Results Show a Significant Payoff from New Ramp Meters in Downtown Atlanta [NTOC Talks]
		The impetus for installing these new ramp meters was a study commissioned by GDOT and conducted by Day-Wilburn and Associates to do a complete analysis of the Atlanta’s heavily congested downtown area.
		While the four new ramp meters are currently operating in a fixed-time arrangement, queue detectors are in place so that if each ramp backs up beyond a pre-determined location, the metering rate will go even faster to help avoid traffic spillover into neighboring arterials.
		Ramp meters are not new to Atlanta, although their use has been small and relegated to relatively non-critical locations.
	www.ntoctalks.com /icdn/atlanta_rampmeters.php (1433 words)

	Comments on: After a bad drive and several crashes, some ramp-meter insights
		If they've spent most of their lives on metered freeways, they tend to become indecisive on unmetered ramps, not knowing quite what to do, and come to a stop at the end of the ramp, waiting for a long open stretch in the traffic, while other drivers wait behind them.
		Ramp meters wouldn't be necessary if A) freeway interchanges were more spaced out, thus lessening the use of the freeway for short trips, B) if the freeways had more adequate capacity, or especially C) if you wouldn't have large platoons of vehicles coming down the on-ramp all at the same time...
		Ramp meters wouldn't be necessary if people had a choice of how to get around.
	www.startribune.com /blogs/roadguy/?feed=rss2&p=145 (2201 words)

	Mn/DOT Ramp Meter Study background and conclusions
		A. During those hours when ramp meters can be activated (6:30 to 8:30 in the morning and 3:30 to 5:30 in the evening), they will do so based on volume/congestion thresholds which when met trigger the start-up of a meter.
		Under the recently enacted ramp meter modifications, when a zone becomes so congested that metering would no longer be helpful to the efficient movement of traffic through it, the zones meters will simply continue to flash yellow.
		A. Prior to the ramp meter shutdown, and prior to the recently enacted modifications, there were six different metering rates that could be applied at any given meter, at any given time during the morning and evening rush hour.
	www.dot.state.mn.us /rampmeterstudy/faqsdec2000.html (2395 words)

	EURAMP what is ramp metering?
		A ramp meter is a traffic signal located on a motorway on-ramp that regulates the traffic entering the motorway from that ramp.
		The objective of ramp metering is to reduce congestion on the motorway and to allow traffic joining the motorway to merge more easily and more safely.
		In a reactive ramp metering strategy, the signal settings are calculated based on real-time traffic data from detectors on the ramp and on the highway upstream and downstream of the ramp.
	www2.napier.ac.uk /euramp/eu_factsabout.htm (378 words)

	[No title]
		Ramp meters are capable of mitigating two major causes of breakdown, on ramp bunching and over demand.
		Simple ramp metering strategies can help alleviate this condition by metering the ramp flow to a steady rate that can be accommodated by the highway.
		At SCAG and OCTA, ramp metering is not a primary consideration.
	home.att.net /~sccf1/ideasandissues/rampmeters.doc (804 words)

	Ramp Meter Installation on Atlanta’s Downtown Connector--Georgia DOT
		Ramp meters are essentially traffic signals located on freeway entrance ramps, designed to reduce disruption to interstate traffic by controlling the flow of merging traffic and alleviating bottlenecks.
		The most recent ramp meters to go on-line are northbound ramps on GA 400 at Northridge, Holcomb Bridge, Mansell and Haynes Bridge roads and the northbound entrance ramp of Old Milton Parkway.
		The ramp meter installation is a result of an extensive study conducted by the Georgia DOT, Federal Highway Administration (FHWA), Georgia Regional Transportation Authority (GRTA), the Atlanta Regional Commission (ARC), the City of Atlanta, Central Atlanta Progress (CAP), and Midtown Alliance focusing on congestion relief on the downtown Connector.
	www.dot.state.ga.us /specialsubjects/roadconstruction/rampmeters (638 words)

	CoTripQuarterly/News (Site not responding. Last check: )
		The ramp meters are in operation during the morning peak period (6-8:30 a.m.).
		Ramp metering has been used since 1969 in that city and some folks simply were not convinced that the time they spent waiting to enter the highway was justified.
		The study says respondents in the “without meters” part of the survey had an increased appreciation of the role of ramp meters, but also were inclined to believe that there was too much metering in free flow conditions, that ramp meter wit times were too long, and that there were too many meters in general.
	www.cotrip.org /cotrip_quarterly/4-2/news3.htm (901 words)

	District 6 News Release
		When the meters are functioning, vehicles will pull up to the white line (stop bar) to trigger the ramp meter.
		Ramp meters are not new to the area.
		In 2001, a total of 17 ramp meters were connected to the ITS to help alleviate congestion.
	www.dot.state.oh.us /dist6/news/ColumbusMeters10-26-06.htm (788 words)

	Ramp Metering E-mail
		My team are responsible for the development of ramp metering and other tactical motorway control systems within the Highways Agency, which is responsible for operating, managing and maintaining the English strategic road network.
		We are curently undertaking trials of ramp metering at six sites on the M27 and M3 motorways near Southampton, with the aim of confirming the benefits of RM and determining which other sites in England would benefit from this control technique.
		The first UK trials of ramp metering took place at a single site on the M6 motorway near Birmingham in the late 1980s and were very successful, showing benefits that would pay for the cost of installing the system within a couple of years.
	www.ajfroggie.com /roads/rampmeter2.htm (751 words)

	Ramping Up Ramp Management, July/August 2006 Public Roads
		Ramp management should be viewed as one piece of an overall, integrated effort to successfully manage the surface transportation system (signified by the smaller puzzle).
		Ramp metering signals, such as those shown here, have proven to be a highly successful and beneficial strategy across the country.
		One ramp meter may be coordinated with others to smooth the traffic flow at a chosen point along a stretch of freeway or to smooth the flow on several freeways within a regional network.
	www.tfhrc.gov /pubrds/06jul/05.htm (3034 words)

	Interstate meters on ramps studied to ease bottlenecks
		Ramp meters are traffic lights at the on-ramp to a freeway.
		The state, which is conducting a ramp meter study, has not made a decision on whether to install the devices.
		State officials said the ramp meters are a stopgap measure until the Ohio-Kentucky-Indiana Regional Council of Governments finishes a study of the traffic corridor.
	www.enquirer.com /editions/2004/06/19/loc_meters19.html (950 words)

	Motorists' wait at ramp meters will be no longer than 4 minutes
		About 30 percent of metro ramp meters will be guided by the new system by March, with the rest being incorporated by the end of 2002.
		"Ramp meters are a tool that helps manage congestion on a system that is overburdened and underfunded," he said.
		MnDot shut down all the 430 metro ramp meters last fall for six-weeks as a part of a ramp meter study.
	www.hometownsource.com /capitol/2001/november/1127rampmeters.html (546 words)

	Mn/DOT Ramp Meter Study background and conclusions
		To fully explore the impacts of ramp metering on freeways, local roads, and on transit operations.
		Support for modification of the metering system increased from 60 to 70 percent of respondents, and included such changes as using faster cycle times, having shorter operating hours, and using fewer meters.
		Ramp meter waits will be no more than four minutes on local ramps and no more than two minutes on freeway-to-freeway ramps.
	www.dot.state.mn.us /rampmeterstudy (572 words)

	RAMP METER - GoGoSearch.com (Site not responding. Last check: )
		A ramp meter or metering light is a device, usually a basic traffic light or a two-phase (red and green, no yellow) light, that regulates the flow of traffic entering freeways according to current traffic conditions.
		However, when ramp metering is about to be enabled, the overhead lamps may show flashing or solid yellow to warn drivers to prepare to stop.
		Although deactivated shortly after they were added, ramp meters have been reactivated at select interchanges of Interstate 476 in Philadelphia, Pennsylvania.In 2000, an experiment was conducted involving shutting off all 433 ramp meters in the Minneapolis-St. Paul area for eight weeks to test their effects.
	www.gogosearch.com /wiki/ramp_meter (634 words)

	WSDOT - 2007 News - Ramp-meter Testing Next Week on SR 16
		Eastbound ramp meters at Jackson and Union avenues and Pearl, Orchard and Center streets will be tested.
		The new meters will be used as needed to help manage and reduce traffic congestion throughout the SR 16 corridor.
		Using ramp meters to control the intervals at which vehicles merge onto the freeway has proven to be a cost-effective method of relieving traffic congestion and reducing collisions.
	www.wsdot.wa.gov /News/2007/07/6_16_rampmeter.htm (255 words)

	PENNDOT TO REACTIVATE I-476 RAMP METERS IN DELAWARE COUNTY ON NOVEMBER 16
		“Ramp meters are a tool to help achieve more consistent travel speeds on I-476 by allowing one car to merge at a time rather than having a platoon of vehicles merge and force their way onto the highway,” Warren said.
		A ramp meter flashes a red and green light to control the rate at which cars and trucks enter the flow of traffic.
		Motorists are reminded that disregarding a ramp meter is a punishable offense and carries the same penalties as running a red light.
	www.dot.state.pa.us /Penndot/Districts/District6/D6Media.nsf/cd20de0d8cd84b3785256d66005b622b/95387669136615c285256f42006ceb97?OpenDocument (832 words)

	JS Online: Ramp meter on I-894 has some seeing red
		Ramp meters - those small stoplights that regulate when cars can enter the freeway - are a perennial source of frustration for some of the Road Warrior's readers.
		This ramp meter is different because the westbound on-ramp uses the same extra lane as the westbound off-ramp just past it, and the two ramps are closer to each other than others in the freeway system, Huisman said.
		Therefore, the ramp meter is running "to break up the traffic," she said.
	www.jsonline.com /story/index.aspx?id=67512 (1068 words)

	ITS Benefits: When the ramp metering system on Minneapolis-St. Paul freeways was shut down, speeds fell by seven ...
		Analysis 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, and other components) are factored in, the benefit/cost ratio for ramp metering is 5:1.
		When the ramp metering system on Minneapolis-St. Paul freeways was deactivated, crash frequency increased by 26 percent.
		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.
	www.benefitcost.its.dot.gov /its/benecost.nsf/0/2882f88ac5d7f36a85256ba0005065dc?OpenDocument (477 words)

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