Authorized Vehicles Only Signs R5-11

Authorized Vehicles Only Signs are essential for controlling access to private roads, restricted lanes, service drives, loading areas, and any location where the public must be kept out for safety or operational reasons. These signs communicate a clear, enforceable message and prevent unauthorized traffic from entering spaces reserved for fleet vehicles, emergency crews, maintenance teams, delivery trucks, or onsite personnel. Each sign is manufactured on heavy gauge aluminum with premium reflective sheeting to ensure visibility during day and night conditions, even in busy facilities or low light environments. The materials will not rust, warp, or fade, making them suitable for long term outdoor installation in all climates.

Our Authorized Vehicles Only Signs follow standard traffic control layouts and lettering that drivers immediately recognize, reducing confusion and strengthening compliance. These signs are commonly installed on private property entrances, gated communities, warehouses, industrial parks, school campuses, and municipal service areas where access must be clearly defined. Mount them to any U channel, square, or breakaway post using standard hardware.

Whether you are managing a commercial property, improving security, or protecting high traffic work zones, these signs deliver professional grade control and dependable durability. Order the exact size and reflectivity level your site requires.
Oops, no results found~

Highway Median Crossover Standards

To maintain highway safety and prevent civilian misuse of emergency turnarounds:

  • Location: Install the R5-11 sign 25 to 50 feet in advance of the crossover entrance on the left (median) side of the roadway.
  • Orientation: Angle the sign face approximately 95 degrees away from the road (slightly outward). This maximizes retroreflection for State Troopers approaching in the left lane while minimizing glare for opposing traffic.
  • Safety Hardware: Because these signs are located near high-speed passing lanes, they must be mounted on NCHRP-350 compliant Breakaway Posts (like U-Channel or Slip-Base systems) to prevent fatality in the event of a run-off-the-road collision.

Regulating Restricted Access Lanes

"Authorized Vehicles Only" signs serve a critical function in traffic management: they preserve specific lanes or cut-throughs for official use. Unlike a standard "Do Not Enter" sign which bans all traffic, these signs create a legal exception for specific users (Police, EMS, Maintenance).

Highway Median Crossovers (MUTCD R5-11)

The most common application is the "cut-through" on divided highways.

  • The Standard: The R5-11 is the federal standard sign. It features black text on a white background.
  • Placement: It must be installed at the entrance to the crossover on the left-hand side of the roadway (closest to the median) to prevent civilian drivers from attempting illegal U-turns.
  • Reflectivity: Because these are placed on high-speed interstates, High Intensity Prismatic (Type IV) or Diamond Grade (Type XI) sheeting is mandatory to ensure visibility to state troopers and maintenance vehicles at night.

Service Roads & Private Facilities

Beyond highways, these signs are vital for facility management.

  • Utility Access: Power companies and water districts use these to mark gravel access roads leading to substations or pumps.
  • Delivery Lanes: Warehouses use them to separate heavy truck traffic from employee parking areas.
  • Durability: Our signs are manufactured from .080" 5052-H38 Aluminum, designed to withstand the wind shear from passing highway traffic without bending.

Frequently Asked Questions

Common questions regarding MUTCD compliance, installation standards, and material specifications for regulatory signage.
What is the difference between "Authorized Vehicles Only" and "Official Vehicles Only"?

Legally, they function identically under the MUTCD. "Authorized Vehicles Only" (R5-11) is the broader, modern standard used by most State DOTs. "Official Vehicles Only" is an older variant still used in some jurisdictions specifically for law enforcement turnarounds. Both are enforceable, but R5-11 is the preferred federal designation for new installations.
Can I use this sign for a private residential driveway?

You can, but it may not be the most effective choice. "Authorized Vehicles Only" implies that traffic is expected (just restricted). For a private home, this might encourage delivery drivers or lost motorists to think, "Maybe I'm authorized?" A "Private Driveway - No Turnaround" or "Restricted Access" sign conveys a stronger "Do Not Enter" message for residential property.
Does this sign grant police authority to ticket on private property?

In many states, yes—but only if the sign meets DOT specifications. If you use a novelty plastic sign, police may not be able to enforce a moving violation ticket on private land. If you use a MUTCD-Compliant R5-11 Sign (Reflective, .080 Aluminum, correct font size) mounted correctly, it is often recognized as a regulatory traffic control device, allowing police to cite violators for "Failure to Obey a Traffic Control Device."

Need specific code assistance?

If your project requires a specific State DOT certification or a specialized variation not listed here, please contact our Compliance Support Team for a custom specification sheet.