Portable Traffic Signal Article
Technology has invaded every part of daily life, putting information at our finger tips and making the once impossible task a routine occurrence. From the explosion of the internet super highway to the ever evolving cell phone we are a society that relies on technology to enhance our lives.
Technological advances have also enabled the construction industry to build better roads and bridges that take less time and are built to higher quality standards. Traffic control within the work zone has employed technology to move the motoring public more efficiently and with increased safety. A major contributor for improved work zone traffic control has been the portable traffic signal.
Portable Traffic Signal Systems have been in existence for over 20 years. The early versions had limited capabilities and were often outfitted with diesel engines requiring regular maintenance and support. Today’s portable traffic signal systems have taken advantage of technology to create a high quality, versatile system that eliminates or greatly reduces maintenance requirements. Perhaps Jason Previte of PENNDOT District 11 summed up the evolution of portable traffic signals best when reflecting on his experience while working in District 10 Congestion Management Section of the Traffic Unit when he said:
“Portable Traffic Signals have come a long way and the new technology being incorporated in newer models have had greater success when properly designed. The use of Video Detection and Emergency Vehicle Preemption in Portable Units allows for a safe and efficient means of temporary traffic control.”
Portable traffic signal systems are available in trailer mount or pedestal (cart) mounted styles. The trailer mounted systems are typically used for projects with durations ranging from 2 weeks to 12 months. Trailer mounted units are equipped with an upper and lower signal head containing 12" diameter LED indications conforming to MUTCD Guidelines. The systems are battery powered with a solar charging system incorporated into the trailer. Most trailer mounted systems are also equipped with a 110-volt charger to provide an option in the event solar exposure is unavailable.
Pedestal mounted signal systems are typically used for daily or short duration projects when work is in active progress. The pedestal mount systems are battery powered and have one signal head with 12" inch diameter LED indications per cart.
Today’s portable traffic signal systems can control up to 9 traffic phases in a single set up. Some manufacturers offer turn arrows, GPS tracking and satellite monitoring systems. Portable traffic signal systems can be equipped with microwave motion sensors or video detection systems for traffic actuation. Pre-emption systems are also available to provide priority green indications to emergency vehicles. Communication between signals can be either hardwire or wireless radio link. Operation options include handheld wireless remote, fixed time and traffic actuation.
Doug Nury, Vice President of Circle “R” Safety in Gibsonia had this comment:
“Today’s portable traffic signal systems are equipped to address any work zone traffic control scenario. The self contained power plant means we don’t have wait for electrical service. The fast efficient setup, relocation and removal of portable traffic signals help our company be more responsive to work zone traffic control requirements while maintaining our commitment to safety.”
Portable Traffic Signal Systems offer a distinct advantage for emergency traffic control applications. They can be setup and operational in a very short period of time. Most systems also have the ability to interface with permanent “street corner” signal systems and can be utilized for relocation, knockdown and power outages. Jeffery Baughman, Civil Engineer, Transportation Traffic Control Specialist for PENNDOT District 2 had this comment:
“Portable Traffic Signals are a simple, fast and reliable response to complex traffic control issues during emergency situations.”
PENNDOT has employed the use of portable traffic signal systems for many years in both construction and maintenance applications. The proven performance history combined with the technological advancements of portable traffic signals has resulted in PENNDOT’s expanded use of this important tool. Bill Laubach, Manager of PENNDOT’s Congestion Management and Signalization Section had this comment concerning portable traffic signals:
“Portable traffic signals have proven to be a useful tool by providing a safe effective traffic control solution in a variety of applications.”
Portable Traffic Signal Systems have been approved for use throughout the United States and Canada. The technological and product advancements over the last 20 years have made portable traffic signals a safe, efficient, versatile tool for an increasing number of traffic control applications around the globe.
To learn more about Horizon Signal Technologies, please contact us.