Guyana Electrical Consultants & Associates

   

Dear Editor,

Mr. Anand Mahadeo in his well articulated letter captioned “Traffic lights might avoid these accidents, give the local company a chance” (3.11.2004) gives a grim reminder of the sordid state of affairs that exists on our roads. While we ponder on the “ifs and buts” of unserviceable traffic lights, I wish to remind my fellow Guyanese that the problem is real and is the main contributor to the indiscipline that is prevalent on our roads today. The solution to the problem is within our grasp primarily through the efforts of my company.

For almost five years the principals of the Guyana Electrical Consultants and Associates have devoted countless hours researching and testing traffic signal control systems that would eventually replace the existing set of dilapidated traffic control systems. Contrary to a local school of thought, the traffic light is still the most effective way of controlling traffic at an intersection.

With the large increase in Guyana’s vehicular traffic over the years, it is impractical to proportionately increase the size of the road network given our limited financial resources and the environmental impact that would follow. Studies have shown that the best alternative to road expansion is an advanced traffic control system. This system offers the greatest payoff when compared to the other options available. There are basically four modes of operation of a traffic signal control system. These are pre-timed, progression schemes, actuated and traffic responsive.

Without getting into too many details, the application and features required determine when and where a particular mode is employed. When properly designed and installed, a traffic light allows the orderly movement of traffic at a design speed along a given route and hence ensures the safety of all road users. Normally, the design speed is the maximum speed allowed along the route (30 mph and 40 mph in Guyana depending on the location).

For example, if a properly designed pre-timed traffic light system were to be employed on the Rupert Craig Highway, any motorist who traverses along the route above the design speed will always be stopped at the next intersection that has a traffic light. Presently in Guyana only the pre-timed mode is employed at intersections. These however have inherent shortcomings - both from the technological and operational standpoint. These are:  

1. The cycle time is fixed regardless of the traffic volume.

2. They cannot be synchronised over a long distance.

3. They do not allow for the safe crossing of the road by the visibly impaired.

4. They do not have Walk/Don’t Walk signs installed.

5. They do not allow protected right turns for vehicular traffic.

6. They consume a lot of electricity.

7. They do not have back-up power capability.

We have designed out all of the above shortcomings and have included some additional features to further enhance performance. In addition, our system has the advantage over the existing system in the areas of installation, troubleshooting and repair.

At this stage, we are willing to work along with any group whether governmental or non-governmental that is willing to initiate change. Also, we welcome any suggestions from concerned citizens on this issue. Feel free to contact us via email at info@guyanaelectrical.com with your suggestions or comments.

Yours faithfully,

Ray Phillips

Operations Manager

Guyana Electrical Consultants and

Associates