Bellevue improves maintenance,reduces operating costs
Challenge: Calling for a new maintenance strategy
With population surpassing 130,000, a thriving downtown business district and the bustling city of Seattle just across Lake Washington, Bellevue is experiencing increased traffic pressures. The challenge has been to accommodate the growing number of motorists without taxing resources.
For the past several decades, Bellevue has used Opticom traffic signal priority control at each of its 185 intersections to help the Bellevue Fire Department drive through intersections safely and reach emergencies more quickly. The Bellevue Police Department was added to the system after a couple of its officers were involved in serious accidents at intersections. Response times and safety metrics improved significantly for each agency.
The Bellevue Traffic Department manages maintenance for all traffic signal operations, including Opticom equipment. With more motorists on the roads, more efficient maintenance programs are required. Bellevue needed to streamline routine maintenance tasks at intersections and maximize its resources without compromising its budget.
“We had full confidence in the effectiveness of the Opticom traffic signal priority control system when properly maintained” said Mike Whiteaker, Bellevue Intelligent Transportation Systems Manager. “It improved our response times. We just needed to find a more effective way to manage and maintain it.”
SOLUTION: The next phase of signal priority
The city began to transition from Opticom Infrared (IR) system components to Opticom multimode as part of its equipment replacement strategy. The first replacement stage included new phase selectors placed in the cabinets at 11 intersections.
The new models — Opticom 764 multimode phase selectors — are compatible with current IR technology and GPS traffic signal priority control technology. As a result, emergency responders from neighboring communities with GPS equipment can trigger signal preemption as easily as Bellevue agencies can with IR technology. The new models also allow for a seamless transition to GPS technology in the future.
“We conduct extensive mutual aid operations with several agencies in the area, from Redmond right next to us to Mercer Island across the bridge,” said Whiteaker. “Some of those communities are deploying GPS technology already. Our new interoperable equipment ensures their response teams won’t be slowed when aiding our citizens.”
It’s the city’s deployment of another Opticom solution, however, that has revolutionized the way traffic signal priority control in Bellevue operates moving forward.
Bellevue implemented Opticom CMS — which works with ethernet connections at the city’s intersections — so phase selectors can relay critical data back to traffic engineers at the centralized traffic management center (TMC).
PERFORMANCE: More data, less guesswork
Within moments of activating CMS, Whiteaker and his team received an array of information about signal preemption at each intersection, and technicians could generate customized reports on selected criteria
“The benefits were immediate,” said Whiteaker. “We can check out activity logs and preemption activity and even identify specific vehicles using signal preemption. We can isolate issues in real time and make smarter and faster maintenance decisions.”
Bellevue is committed to using traffic signal preemption judiciously. Now that engineers can measure efficiencies and plan ahead, it’s no surprise that CMS has become part of the daily routine.
CMS is used to discover other issues, too. For example, it reported long duration signal preemptions for a few intersections. The problem was traced to incorrect emitter installation. As a result, emitters on vehicles didn’t shut off even while parked. The team also uses CMS to improve accountability. Specific vehicles can be identified, so system abuse is easier to monitor.
Automation simplifies tasks and reduces operating costs. Technicians know what is wrong at an intersection before they get there. They can repair equipment faster and minimize traffic flow interference. In fact, many time-consuming and expensive trips to the intersection can be averted entirely.
“Opticom CMS is saving us money,” said Whiteaker. “We can perform a lot of maintenance tasks, including firmware upgrades, from the TMC or from any remote centralized location. We’re only sending technicians to intersections when absolutely necessary.”
Improvements expanded throughout region
More than 75 intersections have been outfitted with the new Opticom equipment. Every year, up to 30 additional intersections will receive new equipment as part of the city’s equipment replacement strategy. Each of those intersections will be connected directly to Opticom CMS so real-time data can be used to improve emergency response service levels and reduce operating costs.
Bellevue won’t be alone. City officials have spoken to representatives from neighboring communities about how Opticom CMS has streamlined maintenance. Opticom traffic signal priority control offers a seamless system that holds users accountable, simplifies maintenance and improves performance from one town to the next. “Our primary goal is to use signal preemption to reach those in need faster,” said Whiteaker.
“Opticom CMS allows us to do that more costeffectively. It lets us be proactive to ensure more consistent performance.” As a burgeoning community, Bellevue continues to seek new innovations to minimize traffic disruptions without compromising resources.
City officials plan to leverage Opticom traffic signal priority control and CMS to introduce new strategies in the future. And, it will work with neighboring communities to improve emergency response services for the entire region.
“Our primary goal is to use signal preemption to reach those in need faster. Opticom CMS allows us to do that more cost-effectively”
– Mike Whiteaker
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