MUTCD R14-4: National Network Signs
The R14-4 sign is covered in Section 2B.68 of the Manual on Uniform Traffic Control Devices, 11th Edition. Below are the provisions from that section that describe when the sign is used and how it is placed.
What it means and when it is used
- Standard · Required (shall)When a National Network route is signed, the National Network (R14-4) sign (see Figure 2B-31 ) shall be used.
- Option · Permitted (may)The National Network Prohibition (R14-5) sign (see Figure 2B-31) may be used to identify routes, portions of routes, and ramps where trucks are prohibited. The R14-5 sign may also be used to mark the ends of designated routes. OTHER REGULATORY SIGNS AND PLAQUES
Where to read the rest
- Full text: MUTCD Section 2B.68: National Network Signs
- Minimum sign sizes by roadway type are in the size section for this chapter: Section 2B.03
- Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide
Related signs in Section 2B.68
Source: Manual on Uniform Traffic Control Devices, 11th Edition (Federal Highway Administration, December 2023, public domain). Excerpts are shortened and shown out of context; read the full section before specifying a sign. Your state may still be operating under the 2009 edition or a state supplement. Official manual: mutcd.fhwa.dot.gov.