MUTCD D11-20: Two-Stage Bicycle Turn Box Guide Signs

The D11-20 sign is covered in Section 9D.13 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)
  Where a two-stage bicycle turn box is provided, the Two-Stage Bicycle Turn Box guide sign series (see Figure 9D-1) may be used.
• Standard · Required (shall)
  Where used, the Two-Stage Bicycle Turn Box Advance (D11-20) guide sign shall be mounted in advance of the intersection where the turn box is located.

Placement and mounting

• Standard · Required (shall)
  Where used, the Two-Stage Bicycle Turn Box (D11-20a) guide sign shall be mounted on the far side of the intersection.
• Option · Permitted (may)
  Where the Two-Stage Bicycle Turn Box Advance (D11-20) guide sign is used, an additional Two-Stage Bicycle Turn Box Advance guide sign may be mounted on the near side of the intersection where the turn box is located.
• Option · Permitted (may)
  If used, an appropriately-sized Street Name (D3-1) sign (see Section 2D.45) may be installed below the Two- Stage Bicycle Turn Box Advance guide sign to identify the crossroad where the turn box will be available.

Where to read the rest

• Full text: MUTCD Section 9D.13: Two-Stage Bicycle Turn Box Guide Signs
• Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide