MUTCD R5-3: NO MOTOR VEHICLES Sign

The R5-3 sign is covered in Section 9B.07 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

Option · Permitted (may)
The NO MOTOR VEHICLES (R5-3) sign (see Figure 9B-1) may be installed at the entrance to a shared-use path.

Where to read the rest

Full text: MUTCD Section 9B.07: NO MOTOR VEHICLES Sign
Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide

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.