Notes for Figure 6H-4 6H4(CA) —Typical Application 4 Short Duration or Mobile Operation on a Shoulder

Guidance:

  1. In those situations where multiple work locations within a limited distance make it practical to place stationary signs, the distance between the advance warning sign and the work should not exceed 5 miles.
  2. In those situations where the distance between the advance signs and the work is 2 miles to 5 miles, a Supplemental Distance plaque should be used with the ROAD WORK AHEAD sign or SHOULDER WORK (C24(CA)) sign.

Option:

  1. The ROAD WORK NEXT XX MILES sign amy be used isntead of the ROAD WORK AHEAD sign or SHOULDER WORK AHEAD (C24(CA)) sign if the work locations occur over a distance of more than 2 miles.
  2. Stationary warning signs may be omitted for short duration or mobile operations if the work vehicle displays high-intensity rotating, flashing, oscillating, or strobe lights.
  3. Vehicle hazard warning signals may be used to supplement high-intensity rotating, flashing, oscillating, or strobe lights.

Standard:

  1. Vehicle hazard warning signals shall not be used instead of the vehicle’s high-intensity rotating, flashing, oscillating, or strobe lights.
  2. If an arrow board is used for an operation on the shoulder, the caution mode shall be used.
  3. Vehicle-mounted signs shall be mounted in a manner such that they are not obscured by equipment or supplies. Sign legends on vehicle-mounted signs shall be covered or turned from view when work is not in progress.