civil engineering , transportation engineering

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Seaside Flood Warning System
ODOT installed a flood warning system on Highway 101 near Seaside. This system warns drivers of water on the roadway and also reduces the need for ODOT maintenance personnel to monitor water levels at this location. The system is composed of a level sensor at the low point in the road connected to a series of advance warning signs at each end of the problem section. Flashing beacons are activated when flood conditions are imminent. The system transmits water level data to district offices so that maintenance personnel will be able to respond or be prepared to respond when conditions warrant. This data is also made available to the public
Snow Zone Signs
Oregon has snow zone signs to help keep its drivers safe. For example, there are approximately 150 signs to warn drivers when tire chains are required because of snow on the roadways. Along I-84, near Pendleton and La Grande, ODOT has enhanced the snow zone signs to be controlled remotely instead of requiring maintenance personnel to manually update the signs. This not only improved efficiency but also safety for both the public and ODOT employees.

McKenzie Over-Length Detection System
In the summer of 2004, a detection and warning system along the McKenzie pass was implemented. This mountainous highway is difficult for longer vehicles to navigate because of its tight curves and narrow lane widths The system consisted of detecting and actively warning drivers of over-length vehicles to turn around. The curves of the pass are such that vehicles greater than 35 feet in length traveling through the winding highway are more prone to accidents or getting stuck. Since system implementation, on average, over 70% of over-length commercial vehicles traversing the McKenzie pass heed the automated warnings and turn around to avoid potential crashes and associated delays.
Transit Signal Priority
Transit Signal Priority (TSP) gives transit vehicles a little extra green time or a little less red time at traffic signals to reduce the time they are slowed down by traffic signals. It is a cost-effective method to enhance regional mobility by improving transit travel times.
TriMet (Portland, Oregon) was able to avoid adding one more bus by using TSP and experienced a 10% improvement in travel time.
Over-Height Vehicle Warning System
In January 2001, a vehicle that was too tall hit the Harrisburg Bridge on State Route 99E, the crash caused nearly $350,000 damage and resulting in a closure of the bridge for fifteen days and a normal 10-minute trip from one town to the other turned into a 45-minute detour around the bridge. In order to avoid these problems in the future, ODOT installed an over height vehicle warning system.
The system uses an infrared light beam to detect when a vehicle exceeds the allowable height for the bridge. If the beam is broken, flashing beacon warning signs will light up, advising the driver to take a detour.

advanced parking information systems
Several European cities operate real-time parking information systems. Primarily these systems are utilized in downtown areas. They usually consist of a set of detectors to count the number of vehicles entering or exiting garages or lots. Display of available parking can then be transferred to variable message signs informing drivers of availability of parking. When drivers are informed that parking is full, the benefits have shown a reduction of up to 25 percent in downtown traffic volumes related to searching for parking spaces.

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