CA2730317A1 - An intelligent, cost effective, time efficient and accident safe system in traffic management - Google Patents

An intelligent, cost effective, time efficient and accident safe system in traffic management Download PDF


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CA2730317A1 CA 2730317 CA2730317A CA2730317A1 CA 2730317 A1 CA2730317 A1 CA 2730317A1 CA 2730317 CA2730317 CA 2730317 CA 2730317 A CA2730317 A CA 2730317A CA 2730317 A1 CA2730317 A1 CA 2730317A1
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CA 2730317
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French (fr)
Subramaniam Masilamany
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Subramaniam Masilamany
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Priority to CA 2730317 priority Critical patent/CA2730317A1/en
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Application status is Abandoned legal-status Critical



    • E01C1/00Design or layout of roads, e.g. for noise abatement, for gas absorption
    • E01C1/04Road crossings on different levels; Interconnections between roads on different levels


This invention is about pedestrian and vehicular traffic management.
1. A case for improved V & P (Vehicular and Pedestrian) is made in this patent 2. Inefficiencies of both the British and American systems are discussed and resolved 3. The distinct advantages of the proposed system is listed in the body of invention 4. System design is given both as diagrams, photographs and text.
Daily we hear of major accident involving several vehicles with human lives lost. Most of the accidents happen at the intersections controlled and uncontrolled. The inventor feels this system will saves lives, time and money.



"An innovative traffic management system that will save Fuel, Time and Lives"
Background of the Invention There are about one billion motor vehicles of different makes and sizes that roam our highways. We also have more than billion kilometres of highways crisscrossing each other. This current invention is a method of eliminating the stop and go system currently in effect. Several systems are currently in effect to deal with traffic at the intersections. In North America it is mostly intersections, in Europe it is handled by a roundabout system. Both systems have their inherent deficiencies. The intersections are necessary to direct traffic in the direction desired by each driver.
There are three types of traffic that has to be managed by an intersection, the throughway traffic, the left turn traffic and the right turn traffic. Each highway has two ways traffic, thus each intersection has to deal with 4 throughway traffic.
This present invention eliminates stop and go system, eliminates left turn system thus allowing continuous flow of traffic non stop at intersections. If one closely watches an intersection during morning rush hour, the traffic perpendicular to moving traffic is stopped and stays on hold till the light turns green. At the same time there are at least 4to 6 vehicles in a nervous and desperate state to make left turns. This current invention eliminates both these inefficiencies. This invention is about converting "Intersections into Interchanges" and Ambiguity into "Absolute-ly" This present invention removes ambiguity, anxiety, chaos and uncertainties at the intersections.

Transport Canada Statistics reveals the following information In 2002-2004, about 800 people were killed and 8,000 were seriously injured annually in intersection-related crashes. This was a small decrease from 1996-2001. Urban crashes account for over half of all fatalities and almost three-quarters of serious injuries from intersection crashes. More middle-aged motorcyclists are being killed or seriously hurt in intersection crashes. More pedestrians, especially seniors, are being killed in intersection crashes. Fewer children under 16 are being killed or seriously injured in crashes at intersections. Intersection-related fatalities among drivers aged 16 to 19 decreased by almost twenty percent between 1996-2001 and 2002-2004. Forty percent of all intersection fatalities involve a driver failing to yield the right of way or disobeying a traffic sign or signal. Older drivers (aged 65 years or older) are much more likely to commit an infraction leading up to an intersection crash than most other drivers. More deaths and serious injuries from intersection crashes are occurring during morning hours.

Between 2002 and 2004, about 800 people were killed and 8,000 were seriously injured annually at intersections. In other words, almost 30 percent of deaths from vehicle crashes and more than 40 percent of serious injuries from vehicle crashes involved an intersection. The tragedy is that these deaths and injuries are unnecessary and mostly preventable.
Intersections pose particular challenges to road users because a lot happens at junctions. Cars, trucks, and motorcycles are traveling in various directions and making turns. Pedestrians are crossing the street.
There are signs to read and traffic signals to obey. Taking in all this information and reacting correctly to it requires focused attention, sound judgment, and quick decisions by every driver.
Sometimes the intersection environment itself makes matters worse.
There may be distracting visual clutter or obstructed views. Congested roads and the lack of turning lanes or signals can make a driver's job more difficult.
Intersections are often made more hazardous by the careless or risky behaviour of drivers. A driver who is distracted by a wailing child or talking on a cell phone might fail to notice a vehicle turning in front of him. A
speeding driver might run through a red light. A person who's been drinking could attempt to drive home after a night on the town.

Who is Behind the Wheel?
Drivers of all ages get involved in major intersection crashes. During 2002-2004, about one in five drivers in a fatal or serious injury intersection crash was aged 35-44 years. However, there is a trend towards more involvement by drivers over 45 years.
A greater number of drivers aged 55-64 years are getting into intersection crashes because the number of licensed drivers in this age group is growing. But there is no obvious explanation why drivers aged 45-54 years are becoming involved in fatal and serious injury crashes more often.
Even though drivers 65 years and older are getting into fewer deadly intersection crashes, they are still a concern because their involvement in serious injury crashes is growing.

Intersections and Older Drivers The natural process of aging may include worsening eyesight, poorer hearing, and reduced range of movement. Mental sharpness can also decrease, sometimes so gradually that it escapes notice. More time is needed to judge a situation, decide what to do, and then take the correct action.
Any of these age-related problems will hinder a driver's ability to travel safely and lawfully through an intersection. That's why senior drivers (those aged 65 years or older) seem to have more difficulty with intersections than the average driver.
Here is an example of that difficulty. Looking at drivers in general, about one in eight had failed to yield the right of way just before they got into a fatal or serious injury crash at an intersection. But when it comes to senior drivers involved in such crashes, one in four had made this dangerous error of attention and judgment.
Here's another example. One in four senior drivers in a fatal intersection crash was trying to turn left just prior to the crash. To put it in comparative terms, a driver aged 65 years or older was twice as likely as the average driver to be turning left at the time of a fatal intersection crash.
Intersections and Motorcyclists The number of motorcyclists being killed or seriously injured in intersection crashes is rising. Although intersection-related deaths and serious injuries among motorcyclists under the age of 25 actually decreased between 1996-2001 and 2002-2004, that improvement was more than offset by a higher number of middle-aged and older victims.
Motorcycle registrations have increased substantially over the past few years, and many of the motorcycles are owned by middle-aged or baby boomer riders. This is translating into more crash victims from this age group. For example, the number of motorcyclists aged 45 to 54 years who died in intersection crashes grew by 60% and the number who were seriously injured increased by 40%. For those aged 55 to 64, fatalities have actually tripled and serious injuries more than doubled.

Pay Attention at Intersections At least 12% of drivers who became involved in a fatal or serious injury intersection crash were distracted and not paying enough attention to the road. Drivers aged 16 to 24 were the most likely to be distracted, followed closely by drivers aged 55 to 64.

More on intersection related information and statistics can be obtained from Transport Canada website link given below:- The present invention eliminates all these hazards.

North American System North American system is based on stop and go system, the traffic perpendicular to the moving traffic is on hold pattern by a red light. After the lapse of predetermined time the lights turn red and the current moving traffic stops. The lights on the other hold side turns and the traffic moves.

The vehicles turning right have fewer difficulties, but they have to pay attention to the left turning traffic.
The left turning traffics are the most vulnerable and it takes a lot of guess work to decide to go or stay. Left turns cause a lot of confusion and accidents.

The current invention eliminates both the stop and go pattern and the left turn difficulties. This invention takes the left turning vehicles completely out of the traffic and deal with it very intelligently.

In this new system there is no stopping at intersections. Traffic is continuously on the move.

Advantages of the proposed invention 1. All 4 directions are moving, non stop all the times, thus eliminating idling. Idling causes pollution, unwanted waste of gasoline and time, furthermore every time a vehicle stop and accelerate it uses lot more gasoline or fuel than continuously moving vehicles.

2. All left turning vehicles are handled by the overhead circular road way thus there is no middle of the road risky, uncontrolled manoeuvring 3. Huge savings on fuel.

4. Huge saving on idle time waste.

5. Less pollution.

6. Less wear and tear of the vehicles especially on brakes and tires.

7. Reduced lateness to work 8. Quicker clearing of traffic 9. Less work for the traffic police.

10. Fewer accidents mean less pressure of emergency workers and vehicles.

11. Fewer accident claims 12. Nationally huge saving of gasoline expense or imports.

13. Better environmental impact.

14. Pedestrian traffic will not be on hold pattern at any time.
British system British system is non stop but it is too confusing, the traffic moves slowly and during rush hours it is mess. They need to convert their systems to this new system. Their system is circular traffic management where all traffic is continuously moving but slowly.

Fuel saving It is estimated that any particular time there are at least 50 vehicles stopped at the red lights, idling and burning fuel polluting the atmosphere.
Then on the light turning green these vehicles need extra boost of power to get moving. This consumes a lot of fuel adding to pollution, there is about 25-30% drop in gas mileage due to stop and go systems.
Insurance Claims This is one of the biggest money saving area. Insurance claims are expensive due to the intricate and complex system of claim management.
Every reduced accident makes the insurance cheaper and affordable, making cost of owning a vehicle mush easier.

Accident Clearing Any one caught in a traffic jam caused by an accident will tell you the amount lost time and wasted fuel. Fire ambulance police, clean up crew they all add up to a hefty sum, not to mention the lost industrial productivity.

Life Saving Some accidents end in loss of life; if we can take away pedestrians traffic away from vehicular traffic so mush the better and so much the better._' that loved ones lives are soared due to our great invention Time saving Every accident ultimately not only uses up scarce resources it leads to loss in productivity. An accident can take up to 2-3 hours to clear up and clean up; some may take hours or even a day. This system reduces the accident incidence thus reduce lost productivity.

Rush Hour Traffic During the rush hour traffic times, there are at least 100-150 vehicles stopped at an intersection. This traffic takes at least 3 to 4 traffic light changes to get through the intersection. This situation is completely eliminated Environmental Impact Not all vehicles burn fuel clean. They all pollute with fumes containing toxic gases. Vehicles tend to produce more pollution idling than moving. Every time vehicles stop at an intersection, there are at least about 50 of them spewing out toxic vapour though we do not smell carbon monoxide is odourless, tasteless, invisible poisonous gas.

Left Turn Management No one can be master at left turns. It always a guess work or delayed traffic and more often accidents. This invention completely eliminates the need for nerve wrecking middle of the intersection traffic management.
The left turn traffic is taken out of the main traffic and sent into the overhead left turn management system which is simple and sure. No guess work.

No Traffic lights Traffic lights add one more uncertainty to traffic management, for when there is electricity outages, traffic lights do not function thus causing traffic nightmares. No malfunctioning traffic lights. There are only two traffic lights for people with disability to cross the road on the underpass side.

U Turns U turns at the intersections are common sight these days. These are risky manoeuvres and people do it in hurry, but this system will make it legal and safe for the driver is just follow the traffic.

Red Light Runners How many time we curse a driver going through the red light and sometimes causes accidents. This invention by separating traffic without any degrees of combinations avoid all these accidents.

Traffic on both directions connected In the present traffic management systems the opposite traffics are independent and one has to get off the road to make a directional change, but this system connects opposite traffics.

Emergency Vehicles Emergency vehicle can now get to the scene faster for they can use the circular raid way to manoeuvre safer and faster.

Fewer repairs Invariably we see drivers drive into lamp posts and medians causing damage, accidents and lost time. This system eliminates all these and make traffic flow smoothly and calmly Less damage to road due to stationary heavy vehicles If one looks at the major intersections one will notice warping lanes do to braking and stop on one spot adding weight to the road. A moving vehicles convert vertical gravitational force into linear force this taking the weight off the road.

Pedestrians and Vehicles do not meet Pedestrians and people can move freely without any fear from any corner of the intersection to do shopping or changing bus routes. Kids will be very much safe for they will have no contact with the traffic. Elderly people can take time to their own pace not worrying about running out of time, caught at the island at the centre.

Adds beauty to the city Once constructed it is not only technical marvel but adds beauty to the city. A raised circular raid way with flower plants will add tremendous beauty to the city. The four inner empty corners will have some advertising space bring added revenue to the city. There can be a promenade lined with two rows of trees and hanging flower garden around the whole structure so the people may enjoy a good afternoon and evening.

No possibility for nefarious characters It will be such an open space their will be no nooks and corners for drug dealers and lover makers who ruin the beauty of the city.

Intimidating Intersection becomes Intelligent interchange The distinct advantage of this system over the intersection system or the circular system is the all guess work has been removed making drivers confident driving. The left turn system is a primitive system for one is parked facing the on coming traffic if by accident the vehicles accelerates in may move into the oncoming traffic.

Cost of construction of the circular roadway This will consist of pillars. May be about 24, supporting cross beams, concrete and asphalt. It will have two lanes and two shoulders on either side for emergency work and vehicles. There will be four on ramps and 4 off ramps. Very few traffic for it will be used only by left turning vehicles, which are very few. But this system makes the traffic management more controlled and specific and all guess work is eliminated. There is not to do or not to do dilemma for drivers. The cost of the whole system is self managing in that the city will get revenue form advertising space rental.
Source of Revenue to the City As a circular structure it provides ample advertising space, and these spaces are very expensive to rent. So the cost of construction can be easily paid off by the advertising revenue. And once paid off it will continue to generate revenue to the city.

Systems Design The design consist of the following for countries where the traffic is right side driving 1 All turning and exiting vehicles will enter the circular roadway via a ramp on the right hand side and exit depending on which direction they are going.

2. One overpass for traffic moving in both direction 3. One underpass for traffic moving in the perpendicular direction.
4. A bridge to carry the pedestrian overpass over the underpass 5. A circular road way either elevated above the underpass and overpass at least at a height of 12-15 feet 6. An on ramp and off ramp for each side of the road way, these are to handle the left turning vehicles right turning vehicles. Or 7. Each road will have one only off ramp for vehicles making the right turn not necessarily at the circular rmirr way level.
8. The turning vehicles to left and right on circular road way may be managed by red-green light system where by only one vehicle is allowed at time to pass or move. This takes the guess work out of the mind of the drivers. The system is capable functioning without this system and with the understanding of each driver.

9. The over pass and the underpass will be made in such a way that the ramps will not be steep. The underpass right below the over pass will graded to about 6-7 feet below the ground level. This will allow the over pass to only about 9-8 feet above the ground. This reduce the gradient and the length of the on and off ramps.

10. Pedestrians crossing will be as follows. Pedestrians cross the overpass will walk under the circular roadway, under the over pass and under the circular roadway. They will never encounter and Vehicular traffic. There will be no lights to obey.

11. Pedestrians crossing the underpass will use a Pedestrian over pass constructed on either side of the underpass, outside or inside the circular road way.

12. Pedestrians with special need such as wheel chair travellers and people with eye sight problem will only use a traffic signal specially designated for the. This will be below the over pass for the pedestrians. The traffic will stop on both directions briefly. Or they will have a special pathway created along side of the ramp, to go under the roadway, along the inner wall of the circular roadway 13. The traffic on the circular roadway may be limited to 30KM per hour, this will virtually eliminate all accidents.

The design for countries where the driving on the left side of the road all remains same except the left turns will enter from the left hand side and exit from the right hand side Dimensions Vehicular pathway Circular Roadway, the minimum internal diameter will be 125 feet and external diameter will be 150 feet or 160 feet depending on the number of lanes. It may go up to 200 feet internal diameter depending on the requirement of the traffic speed. The height of the circular roadway will be 12 feet minimum from the ground to bottom of the bridge. It will have 4 entry ramps and 4 exit ramps to allow the free flow of traffic. The ramps connecting the underpass and over pass to the circular road way will be between 200-400 feet. Minor adjustments may be required depending on the needs of each interchange.

Pedestrian pathway please see figure The pedestrian crossing pathway to cross the overpass will go under the circular roadway, under the overpass and under the circular roadway and emerge on the other side. The pedestrians crossing the underpass will walk along a pathway created along the side of the overpass, it could either on one side or both sides of the overpass. The width may be between 5 and 6 feet. As usual it will be poured concrete.

Drawings and Pictures Please see annexure 1. There is no system like this in any part of the world.

2. The major portion of the claim in the invention and introduction of a circular overhead or underground structure to deal with the left turning traffic, which causes major delays and too many accidents.

3. The right turning vehicles will either enter the circular road or may be just connected to the interchange by a arch type structure, but pedestrians may have to use a signal system to cross over to the other side.

3. The system consists of an overpass and an underpass so that traffic in

Claims (9)

1. There is no system like this in any part of the world.
2. The major portion of the claim in the invention and introduction of a circular overhead or underground structure to deal with the left turning traffic, which causes major delays and too many accidents.
3. The right turning vehicles will either enter the circular road or may be just connected to the interchange by a arch type structure, but pedestrians may have to use a signal system to cross over to the other side.

3. The system consists of an overpass and an underpass so that traffic in both direction moves freely unhindered.
4. The pedestrian cross on the overpass direction is constructed under the over pass.
5. The pedestrian crossing on the underpass directions is handles by a pedestrian over pass along the side of the overpass, possibly on both sides and the physically challenged people will use designated traffic stop button to briefly stop the traffic along the underpass, or they may join the regular pedestrian overpass. This is a provision in keeping with our care and concern to respect human rights to all. If this is taken out 100% of the traffic will move non stop.
6. The whole structure will not require any more land than a regular intersection.
7. The present invention will add beauty to the city for it is an architectural beauty.
8. Both the left coming vehicle and right coming vehicle at any one exit will have drive ways into the city shops and dwellings.
9. There will be two underpasses on the over pass side.

There will be or may be two overpasses on the underpass side.

11. There will be two special pedestrians cross with special signal system for physically challenged people.

12. The underpass will be graded to about 5 to 7 feet below ground level and below the over pass.

13. The overpass will about 6- 8 feet above the ground level and 12-14 feet above the underpass.

14. On and off ramps will be between 100-200 feet depending on the terrain.

1. This system will completely eliminate accidents. All guess work, all ambiguity and uncertainties have been removed 2. This system will completely eliminate stop and go system 3. At least about 25-50 minutes of total driver time will be saved per signal. I.E If we have signal system, based on each signal takes about 30 seconds and on an average 25 vehicles on either side are stopped idling.
That is equal 25 minutes of lost productive time. So at any time every hour about 50 minutes lost and for typical day of 8 hours at the minimum, about 400 minutes of Gross National Down time per intersection.
Assuming minimum wages that will be equivalent to about 400/60minx $10.00 equals to about $70.00 per day intersection. That is approximately about $25,000 per year per intersection.

4. Fuel saving, city driving consumes about 20-30 percent more fuel because of the stop and go instead of constant and continuous moving.
At an average of 25% more fuel we could be saving a lot of money. This money will pay for the cost of construction and maintenance of the whole traffic management system.

5. As it is an innovative system more advantages will become obvious as the actual structure is put to use.

6. This system is ideal for new city developments
CA 2730317 2011-02-07 2011-02-07 An intelligent, cost effective, time efficient and accident safe system in traffic management Abandoned CA2730317A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2730317 CA2730317A1 (en) 2011-02-07 2011-02-07 An intelligent, cost effective, time efficient and accident safe system in traffic management

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2730317 CA2730317A1 (en) 2011-02-07 2011-02-07 An intelligent, cost effective, time efficient and accident safe system in traffic management

Publications (1)

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CA2730317A1 true CA2730317A1 (en) 2012-08-07



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Effective date: 20150203