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An all-way stop – also known as a four-way stop (or three-way stop etc. as appropriate) – is a traffic management system which requires vehicles on all the approaches to a road intersection to stop at the intersection before proceeding through it. Designed for use at low traffic-volume locations, the arrangement is common in the United States, Canada, Mexico, South Africa, and Liberia, as well as in a number of, usually rural, locations in Australia where visibility on the junction approaches is particularly poor. The stop signs at such intersections may be supplemented with additional plates stating the number of approaches.

Operation

In most jurisdictions of the United States, the rules of the all-way stop are the same. A motorist approaching an all-way stop is always required to come to a full stop behind the crosswalk or stop line. Pedestrians always have the priority to cross the road, even if the crosswalk is not marked with surface markings.

If a driver arrives at the intersection and no other vehicles are present, then the driver can proceed.
If, on approach of the intersection, there are one or more cars already there, let them proceed, then proceed yourself.
Should a vehicle be behind one of those proceeding cars, the driver who was there first will proceed before that vehicle.
If a driver arrives at the same time as another vehicle, the vehicle on the right has the right-of-way.
If two vehicles arrive opposite each other at the same time, and no vehicles are on the right, then they may proceed at the same time if they are going straight ahead. If one vehicle is turning and one is going straight, the right-of-way goes to the car going straight.
If two vehicles arrive opposite each other at the same time and one is turning right and one is turning left, the right-of-way goes to the vehicle turning right. Since they are both trying to turn into the same road, priority should be given to the vehicle turning right as they are closest to the lane.

Driving instructors suggest that communication is always vital—including the use of turn signals to indicate which direction you intend to turn.^[1] Often, vehicles are able to make compatible moves at the same time without following the order listed above. If it is not clear who has the right-of-way, drivers should use good judgement until they clear the intersection.^[2]^[3] Within some U.S. jurisdictions, such as the state of Idaho,^[4] bicyclists are exempt from the need to make a complete stop, but must give way to other vehicles as otherwise required by law. In Australia, drivers must give way to other drivers on their right side after coming to a stop.

Application

All roads leading into an all-way stop have an octagonal "stop" sign with an additional plate indicating that they are an all-way stop junction

In the United States, the Federal Highway Administration's Manual on Uniform Traffic Control Devices (MUTCD) defines the standards commonly used for the application of all-way stops.^[5] Where a stop has been determined to qualify, it is signed at all approaches to the intersections with a standard octagonal "Stop" sign, with a supplemental "All-Way" plate. Earlier editions of the MUTCD allowed supplemental plates specifying the number of approaches in an all-way stop, as in "2-Way", "3-Way" or "4-Way". According to the MUTCD, installation of an all-way stop should be based on a traffic engineering study to determine if minimum traffic volume or safety criteria are met. These intersections are often found where roads have light-volume traffic which does not justify a traffic light.

An all-way stop may also be justified if the intersection has shown a history of collisions involving pedestrians or vehicles. All-way stops may also be used as an interim measure preceding the placement of a traffic light, to provide a low-speed area for pedestrians to cross, where a cross street experiences considerable difficulty finding safe gaps due to heavy traffic volumes, or where traffic is frequently delayed by turning conflicts. Additionally, the MUTCD advocates the placement of all-way stops at intersections between through roads in residential areas if an engineering study can show that traffic flow would be improved by installing it. Despite published guidelines, all-way stops are routinely placed by jurisdictions due to political pressure from adjacent residents.^{[citation needed]} Intersections between two minor highways with similar traffic counts, two collector roads in an urban or suburban setting or a collector road and a local road in a busy setting (such as near a school) are the most common locations for an all-way stop.

Traffic signals will sometimes flash red indications in all directions following a malfunction, or all-red flashing operation may be scheduled to reduce delay or handle construction activity or unusual traffic patterns. When a traffic signal flashes in all-red mode, it legally operates as an all-way stop.^[6]^[7]^[8] When all approaches to an intersection are controlled in this way the rules for an all-way stop apply. Traffic signals may also flash yellow to major directions and flash red to minor directions during off-peak times to minimize traffic delays, in which case only side-street traffic is required to stop and yield the right of way to crossing traffic on the major street.

During electrical outages when a traffic signal does not display any indications including flashing red, some jurisdictions require that the intersection be treated as an all-way stop. Other jurisdictions treat a dark signal as an uncontrolled intersection, where standard rules of right-of-way apply without the requirement of a complete stop.

Benefits and disadvantages

The main reason for the use of stop signs at road junctions is safety.^[9]^: 430 According to an international study of locations where the system is in use, all-way stop control applied to four-legged intersections may reduce accident occurrence by 45%.^[9]^{: 431–432} However, given alternative methods of intersection control and some of the disadvantages of all-way stops, the Handbook of Road Safety Measures recommends that four-way stops are best used between minor roads away from urbanized areas.^[9]^{: 431–433} Another benefit of all-way stops is assurance that vehicles enter the intersection at a low speed and have more time to take heed of the traffic situation,^[9]^: 430 especially useful when sight distance is highly restricted.

Some of the disadvantages associated with all-way stops are:

Increased emissions of hydrocarbons.^[9]^{: 431–433}
Increased average delay.^[9]^: 430
Increased wear on vehicle brakes
Discouraging bicycling.^[10]
That once installed, stop signs in general are unsafe to remove; accidents that result in injury may increase by 40%.^[9]^: 431 Once an all-way stop is installed, removal is difficult and risky, as habitual drivers may continue to expect an all-way stop condition.
According to game-theoretical analysis, drivers may have stronger incentives to run the stop sign if they believe drivers in other directions will stop at their respective signs.^[11]

Worldwide comparisons

Few countries outside North America – least of all, those in Europe – have intersections at which all users must stop at all times; the conditions for stop sign placement may indeed preclude such an arrangement in many places.^[9]^: 430 In Sweden all-way stops (Flervägsstopp) have been tested since the 1980s but are little used even though they are now permitted.^[12] In the UK they have always been very uncommon and were formally prohibited by the Department for Transport in 2002.^[13]^[14]

Four-way stops are common in the Southern African Development Community area, with priority going to the first vehicle to arrive and stop at the line.^[15]

The United Arab Emirates also has four-way stops.^[16]

At four-legged intersections within Europe, a roundabout or mini-roundabout may be used to assign a relative priority to each approach. (Roundabouts remain rare in North America, where early failures of rotaries and traffic circles caused such designs to lose favor until the gradual introduction of the modern roundabout in the late 20th century.) Alternatively, at smaller intersections, priority to the right is widely used in most countries.

References

^ Coach, Driving (20 September 2018). "The Four Rules of Four-Way Stops". Swerve Driving School. Retrieved 4 August 2019.
^ "Negotiating Intersections" (PDF). thedrivingcenteronline.net. Retrieved 6 July 2019.
^ "Right of Way Rules - What to do at a 4 Way Stop Sign | Driving School". driversed.com.
^ "Bicycle-related Idaho Code" (PDF). Idaho Vehicle Code Title 49, Chapter 7. Idaho Transportation Department. Archived from the original (PDF) on 3 December 2013. Retrieved 7 February 2013.
^ "Manual on Uniform Traffic Control Devices, 2003 revised version, section 2B-.07 Multi-Way Stop Applications" (PDF).
^ "New Mexico statute 66-7-107". Archived from the original on 12 July 2012.
^ "Statutes & Constitution :View Statutes : Online Sunshine". www.leg.state.fl.us.
^ California Vehicle Code section 21457: Flashing signals
^ ^a ^b ^c ^d ^e ^f ^g ^h Elvik, Rune; Alena Hoye; Truls Vaa; Michael Sorensen (2009). The Handbook of Road Safety Measures: Second Edition. London: Emerald Group. ISBN 978-1-84855-250-0. OCLC 42603066.
^ "Why Bicyclists Hate Stop Signs (J. Fajans and M. Curry)" (PDF).
^ Li, Jiasun (2022). "All-Way Stops". SSRN. Rochester, NY.
^ Johansson, Fillip (2007). "All-way-stop-controlled intersections – A traffic safety measure that is seldom used" [Flervägsstopp i korsningar – Trafiksäker åtgärd som sällan används] (PDF). Department of Society and Technology, Thesis 117 (in Swedish). Lund, Sweden: Lund Institute of Technology Traffic and Road. ISSN 1653-1922. Archived from the original (PDF) on 21 August 2010. Retrieved 22 February 2010.
^ Oxford Mail (2 September 2015). "Junction markings branded a danger".
^ "The Traffic Signs Regulations and General Directions 2002, Part II, Direction 30". Retrieved 24 October 2018.
^ "USER BEHAVIOUR AT A FOUR WAY STOP" (PDF). repository.up.ac.za. Retrieved 6 July 2019.
^ https://jawdah.qcc.abudhabi.ae/en/Registration/QCCServices/Services/STD/ISGL/ISGL-LIST/TR-511.pdf Abu Dhabi Manual on Uniform Traffic Control Devices page 433 - 'Other References'

[1] Coach, Driving (20 September 2018). "The Four Rules of Four-Way Stops". Swerve Driving School. Retrieved 4 August 2019.

[2] "Negotiating Intersections" (PDF). thedrivingcenteronline.net. Retrieved 6 July 2019.

[3] "Right of Way Rules - What to do at a 4 Way Stop Sign | Driving School". driversed.com.

[4] "Bicycle-related Idaho Code" (PDF). Idaho Vehicle Code Title 49, Chapter 7. Idaho Transportation Department. Archived from the original (PDF) on 3 December 2013. Retrieved 7 February 2013.

[5] "Manual on Uniform Traffic Control Devices, 2003 revised version, section 2B-.07 Multi-Way Stop Applications" (PDF).

[6] "New Mexico statute 66-7-107". Archived from the original on 12 July 2012.

[7] "Statutes & Constitution :View Statutes : Online Sunshine". www.leg.state.fl.us.

[8] California Vehicle Code section 21457: Flashing signals

[hrsm-9] ^ ^a ^b ^c ^d ^e ^f ^g ^h Elvik, Rune; Alena Hoye; Truls Vaa; Michael Sorensen (2009). The Handbook of Road Safety Measures: Second Edition. London: Emerald Group. ISBN 978-1-84855-250-0. OCLC 42603066.

[10] "Why Bicyclists Hate Stop Signs (J. Fajans and M. Curry)" (PDF).

[11] Li, Jiasun (2022). "All-Way Stops". SSRN. Rochester, NY.

[fillip-12] Johansson, Fillip (2007). "All-way-stop-controlled intersections – A traffic safety measure that is seldom used" [Flervägsstopp i korsningar – Trafiksäker åtgärd som sällan används] (PDF). Department of Society and Technology, Thesis 117 (in Swedish). Lund, Sweden: Lund Institute of Technology Traffic and Road. ISSN 1653-1922. Archived from the original (PDF) on 21 August 2010. Retrieved 22 February 2010.

[13] Oxford Mail (2 September 2015). "Junction markings branded a danger".

[14] "The Traffic Signs Regulations and General Directions 2002, Part II, Direction 30". Retrieved 24 October 2018.

[15] "USER BEHAVIOUR AT A FOUR WAY STOP" (PDF). repository.up.ac.za. Retrieved 6 July 2019.

[16] ttps://jawdah.qcc.abudhabi.ae/en/Registration/QCCServices/Services/STD/ISGL/ISGL-LIST/TR-511.pdf Abu Dhabi Manual on Uniform Traffic Control Devices page 433 - 'Other References'

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PROFILPELAJAR.COM

All-way stop

Operation

Application

Benefits and disadvantages

Worldwide comparisons

See also

References

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