|FHWA Policy Memorandums|
This figure illustrates an example of the use of General Service sign assemblies to provide directional signing for Alternative Fuel Service from a Freeway. The figure shows a schematic depiction of sign locations for one direction of travel on a freeway exit ramp and on the associated crossroad. The travel direction on the freeway for which signs are illustrated is from bottom to top. The freeway exit ramp is shown diverging from the freeway on the right and intersecting a road crossing under the freeway.
A sign assembly with a blue background and white legends and borders is shown on the right side of the freeway exit ramp, and consists of two square shaped General Service symbol signs representing two of the possible alternative fuels – Electric Vehicle Charging (EV) and Liquefied Natural Gas (LNG) with a distance plaque which reads “2 MILES” and a directional arrow plaque with an arrow pointing left below the EV Charging symbol sign and a distance plaque which reads “1/2 MILE” and a directional arrow plaque with an arrow pointing right below the LNG symbol sign.
A second sign assembly with a blue background and white legends and borders is displayed downstream on the crossroad in advance of an intersection side road which provides access to an EV charging site. The sign assembly consists of a square shaped General Service symbol sign representing one of the possible alternative fuels – EV and a directional arrow plaque with an arrow pointing right.
Back to Figure 4: Example of Typical Exit Ramp and Crossroad Trailblazing Directional Signing to an Alternative Fuel Source from a Freeway.
United States Department of Transportation - Federal Highway Administration