Notes for Figure 6H-16—Typical Application 16 Surveying Along the Center Line of a Road with Low Traffic Volumes
- The lanes on either side of the center work space should have a minimum width of 10 feet as measured from the near edge of the channelizing devices to the edge of the pavement or the outside edge of the paved shoulder.
- Cones should be placed 6 to 12 inches on either side of the center line.
- A flagger should be used to warn workers who cannot watch road users.
4. For surveying on the center line of a high-volume road, one lane shall be closed using the information illustrated in Figure 6H-10 6H-10(CA).
- A high-level warning device may be used to protect a surveying device, such as a target on a tripod.
- Cones may be omitted for a cross-section survey.
- ROAD WORK AHEAD signs may be used in place of the SURVEY CREW AHEAD signs.
- Flags may be used to call attention to the advance warning signs.
- If the work is along the shoulder, the flagger may be omitted.
- For a survey along the edge of the road or along the shoulder, cones may be placed along the edge line.
- A BE PREPARED TO STOP sign may be added to the sign series.
- When used, the BE PREPARED TO STOP sign should be located before after the Flagger symbol sign.