The N.C. Department of Transportation takes into consideration several factors when setting speed limits. Roadway alignment, distance, average speed, crash history, and development are among a few things considered.
The speed limit changes located along the Martin Luther King Jr. Parkway are caused by variations in ground levels throughout the highway. Ground levels before the Wilmington International Airport are at or above ground level, causing the speed limit to remain higher than areas below ground level.
“The design speed of that section of the highway is lower than that of the at-grade (ground-level) section east of there,” said Bob Hammond of the N.C. DOT.
Hammond said ground levels do not play a significant role in deciding speed limits throughout Wilmington, but due to narrow shoulders, curves and merging areas, the design speed of the parkway is 50 mph at the airport exit.
Date posted: September 9, 2010
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