MUTCD I13-1: Emergency Notification System Sign

The I13-1 sign is covered in Section 8B.27 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)
  The Emergency Notification System (I13-1) sign (see Figure 8B-5 ) shall be installed on each approach at all highway-rail grade crossings, and at all highway-LRT grade crossings with automatic gates or flashing light-signals, to provide information to road users so that they can notify the railroad company or transit agency about emergencies or malfunctioning traffic control devices.
• Standard · Required (shall)
  At a highway-rail grade crossing, the Emergency Notification System sign shall, at a minimum, include the USDOT grade crossing inventory number and the emergency contact telephone number.

Placement and mounting

• Standard · Required (shall)
  The minimum width of the Emergency Notification System sign shall be 12 inches and the minimum height shall be 9 inches. The lettering on Emergency Notification System signs for the telephone number, the grade crossing inventory number, and the explanation of the purpose of the sign shall be composed of numerals and upper-case letters that are at least 1 inch in height.
• Guidance · Recommended (should)
  Emergency Notification System signs mounted on Crossbuck Assemblies or signal masts should only be large enough to provide the necessary contact information. Use of larger signs on Crossbuck Assemblies or signal masts that might obstruct the view of rail traffic or other motor vehicles should be avoided.
• Guidance · Recommended (should)
  At station crossings, Emergency Notification System signs or information should be posted in a conspicuous location.

Where to read the rest

• Full text: MUTCD Section 8B.27: Emergency Notification System Sign
• Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide