The next round of testing for the streetcar is scheduled to begin at 10 a.m. Tuesday.
Rain this morning pushed the start time back from 9 a.m.
City officials say this will be the first live power test of the streetcar through Cincinnati's Central Business District.
The test will take place along Central Parkway, Walnut, Second, Main, 12th and Race streets with police escorts in front of and behind the vehicle.
No road closures are planned as the test is meant to simulate real traffic conditions.
The streetcar will make three trips around the loop, at varying speeds and an operator will drive the vehicle as engineers check and measure energy consumption and supply.
Crews will also review clearance measurements in the area and check traffic signals.
Similar tests have already happened along the loop that runs through Over-the-Rhine.
Tests for the entire route will happen later this week.
City leaders say each streetcar is required to log 300 hours of on-track testing before it can receive safety certification from state and federal authorities.
Multi-vehicle testing with the first two streetcars will start early next week.
The streetcar is expected to be operational by September.
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