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Regional Contacts Maritimes, New England, Other nearby states/provinces, Bottom US State DOT's On-Line DMV (Driver Manuals) Del, NJ, NYS, Penn, Ont, PQ, |
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Good design is essential!
Regional -
American Association of State Highway and Transportation Officials (AASHTO) -
2002 Report (48pp in PDF format) Comments and Recommendations on the US Access Board’s "
Draft Guidelines for Accessible Public Rights-of-Way
"
Go for Green (Canada) - contact information - I contacted their representatives in PQ, PEI, Nfld, NS, NB
CLF - Conservation Law Foundation - interested in Communities Project - Livable Cities, Smart Growth, Public Transportation (as the 1st of 5 listed interests)
clf.org/transportation is a resource for people working to create more livable communities by improving transportation. Transportation affects not just how we get places, but what those places are like. In New England, CLF has advocated such transportation initiatives as:
Council of University Transportation Centers (as of F'02, only URI & UMass represent New England, no members from Canada)
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Go for Green (Canada) - contact information - I contacted their representatives in PQ, PEI, Nfld, NS, NB
CLF - Conservation Law Foundation - interested in Communities Project - Livable Cities, Smart Growth, Public Transportation (as the 1st of 5 listed interests)
clf.org/transportation is a resource for people working to create more livable communities by improving transportation. Transportation affects not just how we get places, but what those places are like. In New England, CLF has advocated such transportation initiatives as:
- making neighborhoods safer, quieter and more child-friendly through traffic calming;
- bringing new life to old commercial areas with public transit improvements; and
- improving local mobility by retrofitting streets for bicycling and walking.
Council of University Transportation Centers (as of F'02, only URI & UMass represent New England, no members from Canada)
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Other Northeast
Quebec -
PQ DOT - I wrote to them for information 11/18/02 - Roundabout Webpage (Carrefours giratoires)
Driver Training Manual?
La Societe de l'assurance automobile du Quebec -
Mont-Tremblant - photo - Constructed October 2002
Trois-Rivières (St-Louis-de-France) - photo - Constructed 2001
City of Montreal (St-Laurent) - photo - Constructed 1998
Montreal - Réaménagement du rond-point de l’Acadie à Montréal - ~260,000 vehicles per day!!! Modification of a classic Traffic Circle (2001-2004)
Hull, PQ - proposed modern "traffic circles" -
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Ontario -
Ministry of Transportation - Highway Engineering - Ontario Highway Transport Board -
Driver Handbook or from the 2002 edition may be purchased online for $12.95ca (416-326-5300) - no idea if Roundabouts are even mentioned
Hamilton - Public Works Roundabout page
Ancaster Roundabout Webcam - Looks good at night because of the lighting
Waterloo Municipality Ontario - west of Hamilton
In 2004 roundabouts will be constructed at 2 intersections in the Region of Waterloo:
Ira Needles Boulevard at Erb Street, City of Waterloo;
Can-Amera Parkway at Townline Road, City of Cambridge.
In 2005 roundabouts are presently proposed to be constructed at the following locations:
Fountain Street at Blair Road, City of Cambridge;
Ira Needles Boulevard at Victoria Street South, City of Kitchener
Ira Needles Boulevard at Highland Drive, City of Kitchener;
Ira Needles Boulevard at Highview Drive, City of Kitchener;
Ira Needles Boulevard and University Avenue; City of Waterloo.
Kemptville - County Rd-43 & Cty Rd-19
Ottawa -
City Roundabout Information -
TRAFFIC CALMING IN CENTRETOWN WEST - Eric Darwin - "Traffic calming" is the latest buzzwork in planning circles. In the area just west of the downtown Ottawa core, consultants have been hired to do a parking study and traffic management study for the Somerset Heights area.
The basic tools of traffic calming include street narrowings, street closures, diversions, mazes, stop signs and various other prohibitions. The consultants in the Centretown West study area have some newer tools that are designed to be more subtle, yet effective at traffic calming.
.
The most intriguing idea is to turn ordinary intersections into mini-traffic circles, by constructing a 6+ foot diameter concrete curb ring in the centre of the intersection. The centre of the ring can be grassed or paved. Motorists approaching the intersection must slow down in order to drive around the concrete curb ring. Motorists turning left must drive 270 degrees around the circle, since the concrete ring is so sized to prevent sneaking diagonally to the left around the ring. Amazingly enough, any stop signs at the intersection are removed, since motorists automatically slow down. Motorists seem to intuitively understand the manoevres required (i.e. unlike some other traffic calming attempts, motorists do not get confused and frustrated).
Measurements taken at intersections with stop signs show high levels of disregard for the signs, and motorists tend to speed up after the sign in an attempt to regain time lost at the stop. But for the circle, motorists don't actually come to a stop, and therefore, they don't speed up in the following mid-block. The circles seem to be perfect traffic calming devices since they are cheap, easily understood, effective, and self-enforcing. http://www.flora.org/afo/afz/issue10.html
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Delaware
Legislature -
Municipal (25) & County (3) websites -
Dover - modern Roundabout, 1 in Dover at Mifflin Rd & Fawn
Rehoboth Beach - modern Roundabout, opened May'04 at Rehoboth Beach (built by Corman Construction)
Del-DOT -
Del has county government, but no county transportation authorities. Del-DOT maintains 88% of the roads, Wilmington ~8%
Driver Manual, DMV (1.6mb pdf, 124pp) - p50 shows the W2-6 "Roundabout Ahead" sign, p68 states the "Rotary" Rule - there is nothing about pavement markings or intersection diagrams
Public Hearings & Workshops -
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New Jersey
County (21) & Municipal government - County Map -
NJDOT - Traffic Calming Techniques (381kb pdf)
New Jersey Pedestrian and Bicycle Resource Project -
Driver Manual, each chapter as seperate pdf - In Ch4, p44 there is a section on "Circle Intersections": "There is no set rule for driving into and around a traffic circle in New Jersey. Common sense and caution must prevail at all times." <== 1st of 4 paragraphs
There are no "Roundabout Ahead" signs (W2-6), there is nothing about pavement markings or intersection diagrams
Passiac County
Clifton () - Allwood Rd Roundabout replacing 300ft oval - 2004
Sommerset County
Bound Brook - As part of the receipt of a grant from the United States Economic Development Administration after damage caused by Hurricane Floyd, a road reconstruction project has been initiated by the County of Somerset to improve conditions associated with the Bound Brook "Rotary". The project’s purpose is to provide a direct route into the downtown business district. To accomplish this, the Rotary will be returned to a two-way traffic system with turning movements at the intersection of East Main & South Main Streets controlled by a modern style roundabout. East Street will be realigned to meet the roundabout controlled intersection. The project will be developed in consistence with the Borough’s streetscape theme to establish an attractive gateway for the downtown area. Finally, the existing Rotary will be enhanced to promote pedestrian and vehicular access to Billian Park (article)
At the Ellisburg traffic circle in New Jersey, traffic would lock up at hourly volumes ranging from 4,400 to 5,600 vehicles, and traffic often remained at a standstill until the police intervened. This circle has an elliptical shape with outside diameters of 130 m and 99 m (436 ft and 325 ft). Reluctant to reverse the right-of-way rule, the highway department installed a $270,000 computerized signal system yielding an hourly capacity of 4,400 vehicles. from http://www.alaskaroundabouts.com/history.html
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Pennsylvania
Pennsylvania Roundabout Law (Ch-33B, Sect-3321-b3) "the traffic in the traffic circle shall have the right-of-way".
County & Municipal government - County Map -
PennDOT - ~12 highway districts
Publications: Guide to Roundabouts -
Driver Manual, (736kb pdf, 85pp) - The "Traffic Circle" rule stated on p38 as 1-liner. There are no "Roundabout Ahead" signs (W2-6), there is nothing about pavement markings or intersection diagrams
Safety, Agriculture, Villages and Environment, Inc. (SAVE) - Southern Chester County organization, promoting "Safety w/o Sprawl", & Roundabouts
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New York State (7 modern Roundabouts at April 2003, 3 more to be constructed in 2003, & 13 in 2004 & 30 more in the works after that) - divided into 11 Regions.
NYS Roundabout Law (Article-26, Sect-1145) "the driver of a vehicle approaching or about to enter a rotary traffic circle or island shall yield the right of way to any vehicle already traveling on such circle or around such island".
NYDMV - Driver Manual - there is only 1 mention of "Traffic Circle" & "Rotary" in Ch 5 on Intersections.
Each of these Regions has its own subchapter of the NYSATE (New York State Association of Transportation Engineers)
Empire State Roads
NYSDOT - Modern Roundabout Home Page - Basic information for Users & Design Engineers
Citizen's Guide to Roundabouts (2007, 15.6mb pdf)
Design Services Bureau (Roundabout & Intersection Specialist - Howard McCulloch) - a resource center available to all Regions - also available to help neighboring states (& provinces?)
Region 1 (Capital District)
Glens Falls - Rt29 & Rt40 - Spring'03
Greenwich - Rt29 & Rt40 - Spring'03
Latham Circle (42 44 53.2N, 73 45 39.4W) Same size, updated signs & lines have resulted in an amazing improvement in safety
Malta - I-87, Exit-12, constructed ~2006 - 1st "modern" Roundabout Interstate Interchange & Roundabout Corridor in the NE! (42 58 13N, 73 48 07W)
5 Roundabout Plan Interchange Photo June'06
Slingerlands - Rt-85, 4 new Roundabouts fr Karlsfeld to Slingerlands - opened Autumn 2007
Voorheesville - Rt85 & Rt155, 1st new Roundabout in Region#1, Opened Sep'03 (42 38 57.5N, 73 55 16W)
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Region 2 - Utica - no Classic Traffic Circles
City of Rome - on old USAF base @ Ellsworth & the Parkway; ~60m (196ft) inscribed diameter
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Region 3 - Syracuse
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Region 4 - Rochester (near L.Ontario)
RIT College entrance - Andrews Mem. Dr. and Lomb Mem. Dr.
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Region 5 - 4 western counties - they insisted on my using the Freedom of Information Act (FOIL) to obtain this information - it took several phone calls & letters & took about a month to get a reply.
There are 2 "Classic" Traffic Circles outside Buffalo (& no modern Roundabouts under contemplation):
East Aurora - Rt-20A/16/376/78/Main St, ~100ft inscribed diameter (from Mapquest 6/03 looks "modern")
Hamburg, Erie County - Rt-5/Rt-179??
Big Tree - 6-way intersection!! (I was told 6/23/03 that this replaced a "Classic" Traffic Circle!!)
Mitchell Circle - a 300ft & a 100ft circle off Rt-5 in the Locksley Park area - new development?
Hamburg Village - Revitalization Project - 5 Roundabouts proposed for construction in 2004
Buffalo - at least 5 "Classic" Traffic Circles
Buffalo Dept of Public Works (BPW), 716-851-5636
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Region 6 - Hornell (near Penn. border)
Erwin/Corning (near Elmira) - Corning R&D plant - a double
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Region 7 - Watertown
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Region 8 - Poughkeepsie
Kingston Roundabout at Exit 19 of NY Thruway: Contract Award ($2.7 million, June'00, reopened Dec'00) -
Gang Mills - Loss of a Traffic Circle - I-86 & Rt-17 -
Kinderhook - Rt9 & Rt9H, at proposed (un-needed) shopping Mall - 5-leg RDB Permit Project
KNGG has web-site "opposing" Roundabouts, when, in fact, the real target is "unwanted Malls"
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Region 9 - Binghampton
Johnson City - Region 9 (near Binghampton) - wonderful treatment of the design alternatives for rebuilding this old Traffic Circle. (~$14 million!!) - planned 2004.
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Region 10 - Hauppauge (Long Island)
Jones Beach - there are 2 "classic" 2 lane Traffic Circles (~600ft), each with a tall pointed brick obelisk in the center. There are no divider lines, & no Yield lines for traffic entering the circle. (While I was there 5/19/03, a state maintenance PU truck entered & cut across both lanes to the center island missing me by inches.)
Note: The western Traffic Circle is at the southern end of the Wantegh Pkwy, & the eastern one is at Robert Moses State Park
Noyack Rd, Wickatuck Rd, & Rt-60 - a small traffic circle that could easily be painted & signed to modern FHWA standards.
North Haven (2001) - "The roundabout was part of the 7 mile long, North Haven, NY Route 114 Traffic Calming project which also included the installation of a continuous multi-use bicycle path, Shelter Island ferry terminal improvements, new roadway signs and pavement markings, and aesthetic enhancements".
Shelter Island - Rt-114, at Foxen Creek & S Cartwright Rd; & another farther North by a church (Rt-114, Batman & School Streets) - already for correct signs & lines.
Village of Sag Harbor Express (search on "Roundabout") Reported 11/23/99: NY DOT spokesperson Eileen Peters said that in the majority of cases, 40 to 60 percent of a population is initially unhappy with the prospect of a roundabout in their community. But after the roundabout is actually installed, she said, that number drops to about 10 percent, with more than 90 percent of residents pleased with the calming method.
Robert Brown Associates - Project Engineer Robert Rothschild
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Region 11 - Main Office (New York City) - 18 "Classic" Traffic Circles of various sizes - some on private property probably have been overlooked.
Frederick Douglas Circle (NW corner of Central Park) - Signalized Traffic Circle - in design
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NY-LTAP
UpstateNYRoads Links
PQ DOT - I wrote to them for information 11/18/02 - Roundabout Webpage (Carrefours giratoires)
Driver Training Manual?
La Societe de l'assurance automobile du Quebec -
Mont-Tremblant - photo - Constructed October 2002
Trois-Rivières (St-Louis-de-France) - photo - Constructed 2001
City of Montreal (St-Laurent) - photo - Constructed 1998
Montreal - Réaménagement du rond-point de l’Acadie à Montréal - ~260,000 vehicles per day!!! Modification of a classic Traffic Circle (2001-2004)
Hull, PQ - proposed modern "traffic circles" -
Jump to Top
Ontario -
Ministry of Transportation - Highway Engineering - Ontario Highway Transport Board -
Driver Handbook or from the 2002 edition may be purchased online for $12.95ca (416-326-5300) - no idea if Roundabouts are even mentioned
Hamilton - Public Works Roundabout page
Ancaster Roundabout Webcam - Looks good at night because of the lighting
Waterloo Municipality Ontario - west of Hamilton
In 2004 roundabouts will be constructed at 2 intersections in the Region of Waterloo:
Ira Needles Boulevard at Erb Street, City of Waterloo;
Can-Amera Parkway at Townline Road, City of Cambridge.
In 2005 roundabouts are presently proposed to be constructed at the following locations:
Fountain Street at Blair Road, City of Cambridge;
Ira Needles Boulevard at Victoria Street South, City of Kitchener
Ira Needles Boulevard at Highland Drive, City of Kitchener;
Ira Needles Boulevard at Highview Drive, City of Kitchener;
Ira Needles Boulevard and University Avenue; City of Waterloo.
Kemptville - County Rd-43 & Cty Rd-19
Ottawa -
City Roundabout Information -
TRAFFIC CALMING IN CENTRETOWN WEST - Eric Darwin - "Traffic calming" is the latest buzzwork in planning circles. In the area just west of the downtown Ottawa core, consultants have been hired to do a parking study and traffic management study for the Somerset Heights area.
The basic tools of traffic calming include street narrowings, street closures, diversions, mazes, stop signs and various other prohibitions. The consultants in the Centretown West study area have some newer tools that are designed to be more subtle, yet effective at traffic calming.
.
The most intriguing idea is to turn ordinary intersections into mini-traffic circles, by constructing a 6+ foot diameter concrete curb ring in the centre of the intersection. The centre of the ring can be grassed or paved. Motorists approaching the intersection must slow down in order to drive around the concrete curb ring. Motorists turning left must drive 270 degrees around the circle, since the concrete ring is so sized to prevent sneaking diagonally to the left around the ring. Amazingly enough, any stop signs at the intersection are removed, since motorists automatically slow down. Motorists seem to intuitively understand the manoevres required (i.e. unlike some other traffic calming attempts, motorists do not get confused and frustrated).
Measurements taken at intersections with stop signs show high levels of disregard for the signs, and motorists tend to speed up after the sign in an attempt to regain time lost at the stop. But for the circle, motorists don't actually come to a stop, and therefore, they don't speed up in the following mid-block. The circles seem to be perfect traffic calming devices since they are cheap, easily understood, effective, and self-enforcing. http://www.flora.org/afo/afz/issue10.html
Jump to Top
Delaware
Legislature -
Municipal (25) & County (3) websites -
Dover - modern Roundabout, 1 in Dover at Mifflin Rd & Fawn
Rehoboth Beach - modern Roundabout, opened May'04 at Rehoboth Beach (built by Corman Construction)
Del-DOT -
Del has county government, but no county transportation authorities. Del-DOT maintains 88% of the roads, Wilmington ~8%
Driver Manual, DMV (1.6mb pdf, 124pp) - p50 shows the W2-6 "Roundabout Ahead" sign, p68 states the "Rotary" Rule - there is nothing about pavement markings or intersection diagrams
Public Hearings & Workshops -
Jump to Top
New Jersey
County (21) & Municipal government - County Map -
NJDOT - Traffic Calming Techniques (381kb pdf)
New Jersey Pedestrian and Bicycle Resource Project -
Driver Manual, each chapter as seperate pdf - In Ch4, p44 there is a section on "Circle Intersections": "There is no set rule for driving into and around a traffic circle in New Jersey. Common sense and caution must prevail at all times." <== 1st of 4 paragraphs
There are no "Roundabout Ahead" signs (W2-6), there is nothing about pavement markings or intersection diagrams
Passiac County
Clifton () - Allwood Rd Roundabout replacing 300ft oval - 2004
Sommerset County
Bound Brook - As part of the receipt of a grant from the United States Economic Development Administration after damage caused by Hurricane Floyd, a road reconstruction project has been initiated by the County of Somerset to improve conditions associated with the Bound Brook "Rotary". The project’s purpose is to provide a direct route into the downtown business district. To accomplish this, the Rotary will be returned to a two-way traffic system with turning movements at the intersection of East Main & South Main Streets controlled by a modern style roundabout. East Street will be realigned to meet the roundabout controlled intersection. The project will be developed in consistence with the Borough’s streetscape theme to establish an attractive gateway for the downtown area. Finally, the existing Rotary will be enhanced to promote pedestrian and vehicular access to Billian Park (article)
At the Ellisburg traffic circle in New Jersey, traffic would lock up at hourly volumes ranging from 4,400 to 5,600 vehicles, and traffic often remained at a standstill until the police intervened. This circle has an elliptical shape with outside diameters of 130 m and 99 m (436 ft and 325 ft). Reluctant to reverse the right-of-way rule, the highway department installed a $270,000 computerized signal system yielding an hourly capacity of 4,400 vehicles. from http://www.alaskaroundabouts.com/history.html
Jump to Top
Pennsylvania
Pennsylvania Roundabout Law (Ch-33B, Sect-3321-b3) "the traffic in the traffic circle shall have the right-of-way".
County & Municipal government - County Map -
PennDOT - ~12 highway districts
Publications: Guide to Roundabouts -
Driver Manual, (736kb pdf, 85pp) - The "Traffic Circle" rule stated on p38 as 1-liner. There are no "Roundabout Ahead" signs (W2-6), there is nothing about pavement markings or intersection diagrams
Safety, Agriculture, Villages and Environment, Inc. (SAVE) - Southern Chester County organization, promoting "Safety w/o Sprawl", & Roundabouts
Jump to Top
New York State (7 modern Roundabouts at April 2003, 3 more to be constructed in 2003, & 13 in 2004 & 30 more in the works after that) - divided into 11 Regions.
NYS Roundabout Law (Article-26, Sect-1145) "the driver of a vehicle approaching or about to enter a rotary traffic circle or island shall yield the right of way to any vehicle already traveling on such circle or around such island".
NYDMV - Driver Manual - there is only 1 mention of "Traffic Circle" & "Rotary" in Ch 5 on Intersections.
Each of these Regions has its own subchapter of the NYSATE (New York State Association of Transportation Engineers)
Empire State Roads
NYSDOT - Modern Roundabout Home Page - Basic information for Users & Design Engineers
Citizen's Guide to Roundabouts (2007, 15.6mb pdf)
Design Services Bureau (Roundabout & Intersection Specialist - Howard McCulloch) - a resource center available to all Regions - also available to help neighboring states (& provinces?)
Region 1 (Capital District)
Glens Falls - Rt29 & Rt40 - Spring'03
Greenwich - Rt29 & Rt40 - Spring'03
Latham Circle (42 44 53.2N, 73 45 39.4W) Same size, updated signs & lines have resulted in an amazing improvement in safety
Malta - I-87, Exit-12, constructed ~2006 - 1st "modern" Roundabout Interstate Interchange & Roundabout Corridor in the NE! (42 58 13N, 73 48 07W)
5 Roundabout Plan Interchange Photo June'06
Slingerlands - Rt-85, 4 new Roundabouts fr Karlsfeld to Slingerlands - opened Autumn 2007
Voorheesville - Rt85 & Rt155, 1st new Roundabout in Region#1, Opened Sep'03 (42 38 57.5N, 73 55 16W)
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Region 2 - Utica - no Classic Traffic Circles
City of Rome - on old USAF base @ Ellsworth & the Parkway; ~60m (196ft) inscribed diameter
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Region 3 - Syracuse
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Region 4 - Rochester (near L.Ontario)
RIT College entrance - Andrews Mem. Dr. and Lomb Mem. Dr.
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Region 5 - 4 western counties - they insisted on my using the Freedom of Information Act (FOIL) to obtain this information - it took several phone calls & letters & took about a month to get a reply.
There are 2 "Classic" Traffic Circles outside Buffalo (& no modern Roundabouts under contemplation):
East Aurora - Rt-20A/16/376/78/Main St, ~100ft inscribed diameter (from Mapquest 6/03 looks "modern")
Hamburg, Erie County - Rt-5/Rt-179??
Big Tree - 6-way intersection!! (I was told 6/23/03 that this replaced a "Classic" Traffic Circle!!)
Mitchell Circle - a 300ft & a 100ft circle off Rt-5 in the Locksley Park area - new development?
Hamburg Village - Revitalization Project - 5 Roundabouts proposed for construction in 2004
Buffalo - at least 5 "Classic" Traffic Circles
Buffalo Dept of Public Works (BPW), 716-851-5636
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Region 6 - Hornell (near Penn. border)
Erwin/Corning (near Elmira) - Corning R&D plant - a double
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Region 7 - Watertown
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Region 8 - Poughkeepsie
Kingston Roundabout at Exit 19 of NY Thruway: Contract Award ($2.7 million, June'00, reopened Dec'00) -
Gang Mills - Loss of a Traffic Circle - I-86 & Rt-17 -
Kinderhook - Rt9 & Rt9H, at proposed (un-needed) shopping Mall - 5-leg RDB Permit Project
KNGG has web-site "opposing" Roundabouts, when, in fact, the real target is "unwanted Malls"
Jump to Top
Region 9 - Binghampton
Johnson City - Region 9 (near Binghampton) - wonderful treatment of the design alternatives for rebuilding this old Traffic Circle. (~$14 million!!) - planned 2004.
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Region 10 - Hauppauge (Long Island)
Jones Beach - there are 2 "classic" 2 lane Traffic Circles (~600ft), each with a tall pointed brick obelisk in the center. There are no divider lines, & no Yield lines for traffic entering the circle. (While I was there 5/19/03, a state maintenance PU truck entered & cut across both lanes to the center island missing me by inches.)
Note: The western Traffic Circle is at the southern end of the Wantegh Pkwy, & the eastern one is at Robert Moses State Park
Noyack Rd, Wickatuck Rd, & Rt-60 - a small traffic circle that could easily be painted & signed to modern FHWA standards.
North Haven (2001) - "The roundabout was part of the 7 mile long, North Haven, NY Route 114 Traffic Calming project which also included the installation of a continuous multi-use bicycle path, Shelter Island ferry terminal improvements, new roadway signs and pavement markings, and aesthetic enhancements".
Shelter Island - Rt-114, at Foxen Creek & S Cartwright Rd; & another farther North by a church (Rt-114, Batman & School Streets) - already for correct signs & lines.
Village of Sag Harbor Express (search on "Roundabout") Reported 11/23/99: NY DOT spokesperson Eileen Peters said that in the majority of cases, 40 to 60 percent of a population is initially unhappy with the prospect of a roundabout in their community. But after the roundabout is actually installed, she said, that number drops to about 10 percent, with more than 90 percent of residents pleased with the calming method.
Robert Brown Associates - Project Engineer Robert Rothschild
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Region 11 - Main Office (New York City) - 18 "Classic" Traffic Circles of various sizes - some on private property probably have been overlooked.
Frederick Douglas Circle (NW corner of Central Park) - Signalized Traffic Circle - in design
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NY-LTAP
UpstateNYRoads Links
| This is a collection of Internet references related to Roundabout issues & design criteria - I had wanted to include prices, but many are constructed as part of a bigger project, & so figures are usually impossible or misleading. The one reliable estimate seems to be that the cost of a Roundabout is about the same as the cost of signalizing the same intersection. There is also some anecdotal evidence that at this early stage in North American Roundabout construction & design, overpricing & over design may be occurring. Where ever you see the word "Traffic", they seem to be the people who design "Intersections" Prepared by RNWhite, NEAR(at)cox.net in Fall 2002, revised Mar'08. I'm predicting now (7/03) there will be too many Roundabouts by 2010 in the Northeast to list them individually! I already feel (happily!) overwhelmed by the extent of the work being done in many areas!! |