Variable speed limits to begin on I-95 north

by | Jun 15, 2022 | Traffic

New LED signs with the capability to display variable speed limits will be illuminated starting Thursday, June 16 on Interstate 95 northbound in Caroline and Spotsylvania counties and in the City of Fredericksburg.

Variable speed limit signs, paired with changeable message signs, will replace static speed limit signs over a 15-mile section of I-95 northbound. The new signs are located between exit 110 (Ladysmith) and exit 130 (Route 3/Fredericksburg), from mile markers 115 to 130. The variable speed limit signs are located every half-mile to one mile in the project corridor, with a total of 48 speed limit signs, installed in pairs.

For several days after illumination, the variable speed limit signs will display only the maximum speed limit of 65-70 mph to help motorists adjust to their presence.

Starting on Wednesday, June 22, the system will be fully activated to display variable speed limits between 35 mph and 70 mph.

Drivers will be expected to adjust their speed in this area based on information about real-time traffic conditions and delays on the road ahead. Gradually slowing traffic as it approaches congestion will help to reduce the risk of crashes, and stop-and-go backups.

“When we studied the I-95 corridor to identify areas for operational improvements, we found recurring congestion was contributing to crashes and driver delay at this location, especially on weekends and during holidays,” said Mena Lockwood, P.E., assistant state traffic engineer for the Virginia Department of Transportation (VDOT).

“Northbound motorists approaching this area are often surprised by a sudden slowdown in traffic, and brake sharply,” Lockwood said. “By installing this variable speed limit system here, we can lower vehicle speeds before travelers reach the point of congestion. This reduces the risk of crashes and resulting injuries, and it maximizes our ability to keep traffic moving.”

Flashing beacons attached to the signs will be activated when speed limits are reduced below the maximum limit. Additional static signs posted on I-95 northbound before mile marker 115 will notify drivers they are entering a variable speed limit corridor.

Message boards controlled by operators in VDOT’s Traffic Operations Centers will communicate the reason why speed limits are being lowered, such as congestion ahead, weather conditions, or lane closures for crashes, work zones or other incidents. Six new 511Virginia traffic cameras will be installed in the corridor by summer 2022 as part of this project, which will assist with traffic monitoring.

Speed limits will be reduced by only 10 mph at a time, and will hold at that speed for at least a minute so drivers can reduce speed at a comfortable rate.

When congestion clears, the speed limits will go up directly to the maximum allowable speed limit.

Variable speed limits posted on the LED signs are enforceable, just as with any other posted speed limit sign.

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