2 Del. Admin. Code § 6E.08

Current through Register Vol. 28, No. 5, November 1, 2024

Section 6E.08 - Flagger Stations

Standard:

01 Flagger stations shall be located such that approaching road users will have sufficient distance to stop at an intended stopping point.

01A (DE Revision) Flagger stations shall not be located on Interstates, Freeways, or Expressways.

Option:

01B (DE Revision) In support of emergencies or incidents, flaggers may be used to assist with the traffic control at incident scenes (see Chapter 6I).

02 The distances shown in Table 6E-1, which provides information regarding the stopping sight distance as a function of speed, may be used for the location of a flagger station. These distances may be increased for downgrades and other conditions that affect stopping distance.

Guidance:

03 Flagger stations should be located such that an errant vehicle has additional space to stop without entering the work space. The flagger should identify an escape route that can be used to avoid being struck by an errant vehicle.

Standard:

04 Except in emergency situations, flagger stations shall be preceded by an advance warning sign or signs. Except in emergency situations, flagger stations shall be illuminated at night.

Guidance:

04A (DE Revision) In moving operations on two-lane, two-way, roadways where flaggers are used to control traffic (for example, crack sealing or embankment operations), the flagger station should be located no more than 1,500 feet downstream of the closest flagger advance warning sign.

Standard:

05 (DE Revision) Except in emergency situations, flagger stations shall be illuminated at night with a minimum average horizontal luminance of 50 lux (5 foot candles).

Support:

06 (DE Revision) A horizontal luminance of 50 lux (5 foot candles) can typically be achieved by a light plant featuring four (4) 1000 watt metal halide light fixtures, positioned within 15 feet of the flagging station at a minimum mounting height of 15 feet.

Guidance:

07 (DE Revision) For flagger operations at night, a minimum of one (1) light plant should be dedicated to the flagger operation. Light fixtures should be positioned so as not to cause glare problems for vehicles approaching from any direction.

Standard:

08 (DE Revision) When grade crossings exist either within or in the vicinity of a TTC zone, lane restrictions, flagging, or other operations shall not create conditions where vehicles can be queued across the tracks. If the queuing of vehicles across the tracks cannot be avoided, a uniformed law enforcement officer or flagger shall be provided at the upstream side of the crossing to prevent vehicles from stopping within the grade crossing, considered to be 50 feet on either side of the closest and farthest rail, even if automatic warning devices are in place.

Table 6E-1. Stopping Sight Distance as a Function of Speed
		Speed*	Distance
		20 mph	115 feet
		25 mph	155 feet
		30 mph	200 feet
		35 mph	250 feet
		40 mph	305 feet
		45 mph	360 feet
		50 mph	425 feet
		55 mph	495 feet
		60 mph	570 feet
		65 mph	645 feet
		70 mph	730 feet
		75 mph	820 feet
*	Posted speed, off-peak 85th-percentile speed prior to work starting, or the anticipated operating speed

2 Del. Admin. Code § 6E.08

21 DE Reg. 905 (5/1/2018) (Final)