Adel Highway 169 Projects FAQ

Both a traditional turn lane concept (turn lane drawing) and a roundabout (roundabout drawing) concept have been considered.

The Citizen Focus Group after review of both concepts have recommended to the City Council that a roundabout concept be used to achieve the mission statement of the group that will improve overall safety with achieving desired speed reductions and provide for improved traffic flows within the current Iowa DOT rules and regulations (in consideration of the results of the speed study and traffic counts (that are not large enough yet to allow for stop lights)).

The City Council has not made any final decision but is in consultation with the Iowa DOT regarding both concepts.

Updated: 02/05/19

Roundabouts are statically safer intersections and have fewer accident points when vehicles use the intersection.

Consider the safety reviews of roundabouts from the independent review from the Insurance Institute for Highway Safety: https://www.iihs.org/iihs/topics/t/roundabouts/qanda#roundabouts  As well as the Federal Highway Administration:  https://safety.fhwa.dot.gov/intersection/innovative/roundabouts/  Video: https://youtu.be/C6LoK0hxj7k

In the State of Iowa three out of the five existing roundabouts on state highways that are designed similarly to the design in the Adel Highway 169 roundabout concept.  Injury crashes have been nearly eliminated, and property damage crashes reduced in 2 of the 3 intersections.  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Updated:  02/05/19

Yes — there are five current roundabouts in the State of Iowa on state highways:

• IA 281 & Raymond Avenue in rural Black Hawk County
• IA 3 & IA 187 in rural Fayette County (near Starmont School)
• US 30 & 10th Avenue in Mt. Vernon
• US 30 & IA 1 in Mt. Vernon
• US 34 & US 63 in Ottumwa

You can view and navigate as if driving using Google Street View the two that are most like the proposed Adel roundabout concept:

• US 30 & 10th Avenue in Mt. Vernon 
• IA 3 & IA 187 in rural Fayette County (near Starmont School)

Updated:  02/05/19

Roundabouts are designed with large commercial trucks in mind.  They include truck skirts/aprons in the center turn and in slip lanes that allow long trucks to navigate turns with ease when properly understood and used.  You can learn more about this design at this YouTube video:  https://youtu.be/jGM8UGfgeMg

While some have experience and different parts of the country have more roundabouts, it is understood that not everyone has experience navigating roundabouts.  Of course this can be true of most traffic situations in one’s lifetime (i.e. no experience driving multilane freeway such as I-235, etc.), it is well understood, that like other communities, an effort to educate local citizens will be required.

• Iowa DOT:  https://iowadot.gov/traffic/roundabouts/Roundabout-Demonstrations
• City of Coralville: http://www.coralville.org/764/Roundabouts
• City of Johnston:  http://www.cityofjohnston.com/603/Roundabouts
• State of Missouri: https://youtu.be/X0RcTWEBtYM
• Insurance Institute for Highway Safety: https://youtu.be/1DJDjaa25Co
• Regarding large trucks & loads: https://youtu.be/jGM8UGfgeMg

Iowa students as well are currently educated in the Iowa DOT Drivers Training Manual on roundabouts — see page 40 in the manual.

Updated: 02/05/19

• Highway 169 does not have any special designation for truck traffic set by the Iowa DOT.
• Highway 169 is not designated by Iowa DOT as part of the Commercial and Industrial Network (CIN):  Designated road system of primary highways that connect the state’s regional growth areas and carry a significant amount of the state’s commercial traffic; the CIN does not include the interstate system.

While Highway 169 through Adel is used by many commercial trucks (semi trucks, straight trucks, buses, garbage trucks, dump trucks, etc.), traffic counts do not show that it is larger than any comparable highway.

Current data (from 2016) from the Iowa DOT shows that daily traffic counts:  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Sources:  Iowa DOT Vehicular Traffic Map; Iowa DOT Truck Traffic Map

Note:  Updated traffic counts currently being performed along this corridor in Adel.  Numbers will be added when available.

Updated:  02/05/19

Both a traditional turn lane concept (turn lane drawing) and a roundabout (roundabout drawing) concept have been considered.

The Citizen Focus Group after review of both concepts have recommended to the City Council that a roundabout concept be used to achieve the mission statement of the group that will improve overall safety with achieving desired speed reductions and provide for improved traffic flows within the current Iowa DOT rules and regulations (in consideration of the results of the speed study and traffic counts (that are not large enough yet to allow for stop lights)).

The City Council has not made any final decision but is in consultation with the Iowa DOT regarding both concepts.

Updated: 02/05/19

Roundabouts are statically safer intersections and have fewer accident points when vehicles use the intersection.

Consider the safety reviews of roundabouts from the independent review from the Insurance Institute for Highway Safety: https://www.iihs.org/iihs/topics/t/roundabouts/qanda#roundabouts  As well as the Federal Highway Administration:  https://safety.fhwa.dot.gov/intersection/innovative/roundabouts/  Video: https://youtu.be/C6LoK0hxj7k

In the State of Iowa three out of the five existing roundabouts on state highways that are designed similarly to the design in the Adel Highway 169 roundabout concept.  Injury crashes have been nearly eliminated, and property damage crashes reduced in 2 of the 3 intersections.  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Updated:  02/05/19

Yes — there are five current roundabouts in the State of Iowa on state highways:

• IA 281 & Raymond Avenue in rural Black Hawk County
• IA 3 & IA 187 in rural Fayette County (near Starmont School)
• US 30 & 10th Avenue in Mt. Vernon
• US 30 & IA 1 in Mt. Vernon
• US 34 & US 63 in Ottumwa

You can view and navigate as if driving using Google Street View the two that are most like the proposed Adel roundabout concept:

• US 30 & 10th Avenue in Mt. Vernon 
• IA 3 & IA 187 in rural Fayette County (near Starmont School)

Updated:  02/05/19

Roundabouts are designed with large commercial trucks in mind.  They include truck skirts/aprons in the center turn and in slip lanes that allow long trucks to navigate turns with ease when properly understood and used.  You can learn more about this design at this YouTube video:  https://youtu.be/jGM8UGfgeMg

While some have experience and different parts of the country have more roundabouts, it is understood that not everyone has experience navigating roundabouts.  Of course this can be true of most traffic situations in one’s lifetime (i.e. no experience driving multilane freeway such as I-235, etc.), it is well understood, that like other communities, an effort to educate local citizens will be required.

• Iowa DOT:  https://iowadot.gov/traffic/roundabouts/Roundabout-Demonstrations
• City of Coralville: http://www.coralville.org/764/Roundabouts
• City of Johnston:  http://www.cityofjohnston.com/603/Roundabouts
• State of Missouri: https://youtu.be/X0RcTWEBtYM
• Insurance Institute for Highway Safety: https://youtu.be/1DJDjaa25Co
• Regarding large trucks & loads: https://youtu.be/jGM8UGfgeMg

Iowa students as well are currently educated in the Iowa DOT Drivers Training Manual on roundabouts — see page 40 in the manual.

Updated: 02/05/19

• Highway 169 does not have any special designation for truck traffic set by the Iowa DOT.
• Highway 169 is not designated by Iowa DOT as part of the Commercial and Industrial Network (CIN):  Designated road system of primary highways that connect the state’s regional growth areas and carry a significant amount of the state’s commercial traffic; the CIN does not include the interstate system.

While Highway 169 through Adel is used by many commercial trucks (semi trucks, straight trucks, buses, garbage trucks, dump trucks, etc.), traffic counts do not show that it is larger than any comparable highway.

Current data (from 2016) from the Iowa DOT shows that daily traffic counts:  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Sources:  Iowa DOT Vehicular Traffic Map; Iowa DOT Truck Traffic Map

Note:  Updated traffic counts currently being performed along this corridor in Adel.  Numbers will be added when available.

Updated:  02/05/19

Both a traditional turn lane concept (turn lane drawing) and a roundabout (roundabout drawing) concept have been considered.

The Citizen Focus Group after review of both concepts have recommended to the City Council that a roundabout concept be used to achieve the mission statement of the group that will improve overall safety with achieving desired speed reductions and provide for improved traffic flows within the current Iowa DOT rules and regulations (in consideration of the results of the speed study and traffic counts (that are not large enough yet to allow for stop lights)).

The City Council has not made any final decision but is in consultation with the Iowa DOT regarding both concepts.

Updated: 02/05/19

Roundabouts are statically safer intersections and have fewer accident points when vehicles use the intersection.

Consider the safety reviews of roundabouts from the independent review from the Insurance Institute for Highway Safety: https://www.iihs.org/iihs/topics/t/roundabouts/qanda#roundabouts  As well as the Federal Highway Administration:  https://safety.fhwa.dot.gov/intersection/innovative/roundabouts/  Video: https://youtu.be/C6LoK0hxj7k

In the State of Iowa three out of the five existing roundabouts on state highways that are designed similarly to the design in the Adel Highway 169 roundabout concept.  Injury crashes have been nearly eliminated, and property damage crashes reduced in 2 of the 3 intersections.  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Updated:  02/05/19

Yes — there are five current roundabouts in the State of Iowa on state highways:

• IA 281 & Raymond Avenue in rural Black Hawk County
• IA 3 & IA 187 in rural Fayette County (near Starmont School)
• US 30 & 10th Avenue in Mt. Vernon
• US 30 & IA 1 in Mt. Vernon
• US 34 & US 63 in Ottumwa

You can view and navigate as if driving using Google Street View the two that are most like the proposed Adel roundabout concept:

• US 30 & 10th Avenue in Mt. Vernon 
• IA 3 & IA 187 in rural Fayette County (near Starmont School)

Updated:  02/05/19

Roundabouts are designed with large commercial trucks in mind.  They include truck skirts/aprons in the center turn and in slip lanes that allow long trucks to navigate turns with ease when properly understood and used.  You can learn more about this design at this YouTube video:  https://youtu.be/jGM8UGfgeMg

While some have experience and different parts of the country have more roundabouts, it is understood that not everyone has experience navigating roundabouts.  Of course this can be true of most traffic situations in one’s lifetime (i.e. no experience driving multilane freeway such as I-235, etc.), it is well understood, that like other communities, an effort to educate local citizens will be required.

• Iowa DOT:  https://iowadot.gov/traffic/roundabouts/Roundabout-Demonstrations
• City of Coralville: http://www.coralville.org/764/Roundabouts
• City of Johnston:  http://www.cityofjohnston.com/603/Roundabouts
• State of Missouri: https://youtu.be/X0RcTWEBtYM
• Insurance Institute for Highway Safety: https://youtu.be/1DJDjaa25Co
• Regarding large trucks & loads: https://youtu.be/jGM8UGfgeMg

Iowa students as well are currently educated in the Iowa DOT Drivers Training Manual on roundabouts — see page 40 in the manual.

Updated: 02/05/19

• Highway 169 does not have any special designation for truck traffic set by the Iowa DOT.
• Highway 169 is not designated by Iowa DOT as part of the Commercial and Industrial Network (CIN):  Designated road system of primary highways that connect the state’s regional growth areas and carry a significant amount of the state’s commercial traffic; the CIN does not include the interstate system.

While Highway 169 through Adel is used by many commercial trucks (semi trucks, straight trucks, buses, garbage trucks, dump trucks, etc.), traffic counts do not show that it is larger than any comparable highway.

Current data (from 2016) from the Iowa DOT shows that daily traffic counts:  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Sources:  Iowa DOT Vehicular Traffic Map; Iowa DOT Truck Traffic Map

Note:  Updated traffic counts currently being performed along this corridor in Adel.  Numbers will be added when available.

Updated:  02/05/19

Both a traditional turn lane concept (turn lane drawing) and a roundabout (roundabout drawing) concept have been considered.

The Citizen Focus Group after review of both concepts have recommended to the City Council that a roundabout concept be used to achieve the mission statement of the group that will improve overall safety with achieving desired speed reductions and provide for improved traffic flows within the current Iowa DOT rules and regulations (in consideration of the results of the speed study and traffic counts (that are not large enough yet to allow for stop lights)).

The City Council has not made any final decision but is in consultation with the Iowa DOT regarding both concepts.

Updated: 02/05/19

Roundabouts are statically safer intersections and have fewer accident points when vehicles use the intersection.

Consider the safety reviews of roundabouts from the independent review from the Insurance Institute for Highway Safety: https://www.iihs.org/iihs/topics/t/roundabouts/qanda#roundabouts  As well as the Federal Highway Administration:  https://safety.fhwa.dot.gov/intersection/innovative/roundabouts/  Video: https://youtu.be/C6LoK0hxj7k

In the State of Iowa three out of the five existing roundabouts on state highways that are designed similarly to the design in the Adel Highway 169 roundabout concept.  Injury crashes have been nearly eliminated, and property damage crashes reduced in 2 of the 3 intersections.  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Updated:  02/05/19

Yes — there are five current roundabouts in the State of Iowa on state highways:

• IA 281 & Raymond Avenue in rural Black Hawk County
• IA 3 & IA 187 in rural Fayette County (near Starmont School)
• US 30 & 10th Avenue in Mt. Vernon
• US 30 & IA 1 in Mt. Vernon
• US 34 & US 63 in Ottumwa

You can view and navigate as if driving using Google Street View the two that are most like the proposed Adel roundabout concept:

• US 30 & 10th Avenue in Mt. Vernon 
• IA 3 & IA 187 in rural Fayette County (near Starmont School)

Updated:  02/05/19

Roundabouts are designed with large commercial trucks in mind.  They include truck skirts/aprons in the center turn and in slip lanes that allow long trucks to navigate turns with ease when properly understood and used.  You can learn more about this design at this YouTube video:  https://youtu.be/jGM8UGfgeMg

While some have experience and different parts of the country have more roundabouts, it is understood that not everyone has experience navigating roundabouts.  Of course this can be true of most traffic situations in one’s lifetime (i.e. no experience driving multilane freeway such as I-235, etc.), it is well understood, that like other communities, an effort to educate local citizens will be required.

• Iowa DOT:  https://iowadot.gov/traffic/roundabouts/Roundabout-Demonstrations
• City of Coralville: http://www.coralville.org/764/Roundabouts
• City of Johnston:  http://www.cityofjohnston.com/603/Roundabouts
• State of Missouri: https://youtu.be/X0RcTWEBtYM
• Insurance Institute for Highway Safety: https://youtu.be/1DJDjaa25Co
• Regarding large trucks & loads: https://youtu.be/jGM8UGfgeMg

Iowa students as well are currently educated in the Iowa DOT Drivers Training Manual on roundabouts — see page 40 in the manual.

Updated: 02/05/19

• Highway 169 does not have any special designation for truck traffic set by the Iowa DOT.
• Highway 169 is not designated by Iowa DOT as part of the Commercial and Industrial Network (CIN):  Designated road system of primary highways that connect the state’s regional growth areas and carry a significant amount of the state’s commercial traffic; the CIN does not include the interstate system.

While Highway 169 through Adel is used by many commercial trucks (semi trucks, straight trucks, buses, garbage trucks, dump trucks, etc.), traffic counts do not show that it is larger than any comparable highway.

Current data (from 2016) from the Iowa DOT shows that daily traffic counts:  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Sources:  Iowa DOT Vehicular Traffic Map; Iowa DOT Truck Traffic Map

Note:  Updated traffic counts currently being performed along this corridor in Adel.  Numbers will be added when available.

Updated:  02/05/19

Both a traditional turn lane concept (turn lane drawing) and a roundabout (roundabout drawing) concept have been considered.

The Citizen Focus Group after review of both concepts have recommended to the City Council that a roundabout concept be used to achieve the mission statement of the group that will improve overall safety with achieving desired speed reductions and provide for improved traffic flows within the current Iowa DOT rules and regulations (in consideration of the results of the speed study and traffic counts (that are not large enough yet to allow for stop lights)).

The City Council has not made any final decision but is in consultation with the Iowa DOT regarding both concepts.

Updated: 02/05/19

Roundabouts are statically safer intersections and have fewer accident points when vehicles use the intersection.

Consider the safety reviews of roundabouts from the independent review from the Insurance Institute for Highway Safety: https://www.iihs.org/iihs/topics/t/roundabouts/qanda#roundabouts  As well as the Federal Highway Administration:  https://safety.fhwa.dot.gov/intersection/innovative/roundabouts/  Video: https://youtu.be/C6LoK0hxj7k

In the State of Iowa three out of the five existing roundabouts on state highways that are designed similarly to the design in the Adel Highway 169 roundabout concept.  Injury crashes have been nearly eliminated, and property damage crashes reduced in 2 of the 3 intersections.  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Updated:  02/05/19

Yes — there are five current roundabouts in the State of Iowa on state highways:

• IA 281 & Raymond Avenue in rural Black Hawk County
• IA 3 & IA 187 in rural Fayette County (near Starmont School)
• US 30 & 10th Avenue in Mt. Vernon
• US 30 & IA 1 in Mt. Vernon
• US 34 & US 63 in Ottumwa

You can view and navigate as if driving using Google Street View the two that are most like the proposed Adel roundabout concept:

• US 30 & 10th Avenue in Mt. Vernon 
• IA 3 & IA 187 in rural Fayette County (near Starmont School)

Updated:  02/05/19

Roundabouts are designed with large commercial trucks in mind.  They include truck skirts/aprons in the center turn and in slip lanes that allow long trucks to navigate turns with ease when properly understood and used.  You can learn more about this design at this YouTube video:  https://youtu.be/jGM8UGfgeMg

While some have experience and different parts of the country have more roundabouts, it is understood that not everyone has experience navigating roundabouts.  Of course this can be true of most traffic situations in one’s lifetime (i.e. no experience driving multilane freeway such as I-235, etc.), it is well understood, that like other communities, an effort to educate local citizens will be required.

• Iowa DOT:  https://iowadot.gov/traffic/roundabouts/Roundabout-Demonstrations
• City of Coralville: http://www.coralville.org/764/Roundabouts
• City of Johnston:  http://www.cityofjohnston.com/603/Roundabouts
• State of Missouri: https://youtu.be/X0RcTWEBtYM
• Insurance Institute for Highway Safety: https://youtu.be/1DJDjaa25Co
• Regarding large trucks & loads: https://youtu.be/jGM8UGfgeMg

Iowa students as well are currently educated in the Iowa DOT Drivers Training Manual on roundabouts — see page 40 in the manual.

Updated: 02/05/19

• Highway 169 does not have any special designation for truck traffic set by the Iowa DOT.
• Highway 169 is not designated by Iowa DOT as part of the Commercial and Industrial Network (CIN):  Designated road system of primary highways that connect the state’s regional growth areas and carry a significant amount of the state’s commercial traffic; the CIN does not include the interstate system.

While Highway 169 through Adel is used by many commercial trucks (semi trucks, straight trucks, buses, garbage trucks, dump trucks, etc.), traffic counts do not show that it is larger than any comparable highway.

Current data (from 2016) from the Iowa DOT shows that daily traffic counts:  (Note:  On a mobile device you may need to turn your device to landscape (sideways) to view this table in full.) 

Sources:  Iowa DOT Vehicular Traffic Map; Iowa DOT Truck Traffic Map

Note:  Updated traffic counts currently being performed along this corridor in Adel.  Numbers will be added when available.

Updated:  02/05/19