(A) Manuals. Anyone performing work within the county road right-of-way must conform with the requirements set out in the latest edition of the Indiana Manual on Uniform Traffic Control Devices or the latest edition of the Handbook for Traffic Control in Construction and Maintenance Areas, which is published by HERPICC at Purdue University.
(B) Procedures, permit. The traffic control procedures must be followed, even if a permit is not required for work in the right-of-way. A permit holder must also provide all traffic control as set out in the conditions of the permit. A road must not be completely closed to traffic at any time unless it has been requested as a part of the permit, and the Board of Commissioners for the county have approved a traffic detour plan.
(C) Guidelines for use of flaggers by utilities and contractors on county roads.
(1) When working on a low volume road, the guidelines within this division (C) may be used to determine if flaggers are not required on the project.
(2) When the traffic lane is fully or partially obstructed by a maintenance or construction operation, a flagger or flaggers, will not be required, only when all of the following are met.
(a) The ADT of the given section of road is less than 400 vehicles per day. If the ADT is not on record at the County Highway Engineering Department, the County Highway Engineer shall determine if this criteria is met.
(b) The work zone on any road (except a local residential street) must be more than 400 feet from an intersection. On focal residential streets, the work zone must be greater than 100 feet from an intersection.
(c) Motorists in both directions can see approaching motorist from the opposite direction with no sight obstruction. In order for a vehicle to stop, this means that the motorists shall have an unobstructed view from “d” feet from their end of the work zone to “d” feet from the end of the work zone.
Posted Speed | d* (feet) |
Posted Speed | d* (feet) |
20 | 310 |
25 | 370 |
30 | 430 |
35 | 495 |
40 | 555 |
45 | 615 |
50 | 670 |
55 | 755 |
Notes to Table: *d = length of maximum number of cars in storage + distance require for driver to react + distance required for driver to stop | |
(d) The work activity does not create congestion or backup of over five vehicles at any time. These shall be increased for wet pavement, gravel, or on descending grades.
(D) Other information.
(1) Use 55 mph if not posted.
(2) These are guidelines based on the Handbook for Traffic Control (HERPICC), the Indiana Manual on Uniform Traffic Control Devices (1988 IDOH), and the Handbook of Traffic Control Practices for Low-Volume Roads in Indiana (HERPICC 1984). These are only guidelines, and as specified in the manuals, good judgment should be used in determining when flaggers should be used but may not be required by these guidelines.
(3) The work zone shall include all cones making the taper protecting the actual work area. Traffic control devices, placement of traffic control devices, and requirements for flaggers (including clothing, procedures, and locations) shall be detailed in the HERPICC Handbook for Traffic Control in Construction and Maintenance Areas. A lane shall be considered partially obstructed when a ten-foot lane for each direction of traffic can be maintained.
(Ord. 1999-01, passed 1-4-1999)