When warning lights are used, they shall be mounted on signs or channelizing devices in a manner that, if hit by an errant vehicle, they will not be likely to penetrate the windshield. 07 A tubular marker shall be attached to the pavement to display the minimum 2-inch width to the approaching road users. This sign should be placed at the beginning of the TTC zone and repeated at 2-mile intervals in long TTC zones. Option: Option: 02 Regulatory signs shall be authorized by the public agency or official having jurisdiction and shall conform with Chapter 2B. Standard: Shorter letter sizes may also be used on a portable changeable message sign used on low speed facilities provided that the message is legible from at least 650 feet. Types of AWEGS advance warning signs that may be used include: (1) a single W3-4 sign (advance traffic control sign) shown in Figure 1a for two-lane, two-way, undivided roadways; (2) dual Support: CROSSBUCK SIGN. Damaged crash cushions shall be promptly repaired or replaced to maintain their crashworthiness. Option: Warning signs must be located to provide adequate visibility distance to drivers; not blocked by foliage, roadway features, or other signs and traffic control devices; and not located where glare from light sources behind the sign may reduce visibility. Providing a barrier-protected work space for short-term closures and providing unbalanced flow to accommodate changes in the direction of peak-period traffic flows are two of the advantages of using movable barriers. 25 Portable changeable message signs shall be equipped with a power source and a battery back-up to provide continuous operation when failure of the primary power source occurs. Individual channelizing devices, tape or rope used to connect individual devices, other discontinuous barriers and devices, and pavement markings are not detectable by persons with visual disabilities and are incapable of providing detectable path guidance on temporary or realigned sidewalks or other pedestrian facilities. 08 All arrow boards shall be finished in non-reflective black. 01 In order to give road users advance notice of a lane shift, a Reverse Curve (W1-4, W1-4b, or W1-4c) sign (see Figure 6F-4) should be used when a lane (or lanes) is being shifted to the left or right. The One-Direction Large Arrow (W1-6) sign shall be 24 x 12 inches. When arrow boards are used to close multiple lanes, a separate arrow board shall be used for each closed lane. The delineation color shall match the applicable pavement marking color. Please note that a module on Advance Warning is available on the Responder Safety Learning Network (learning.respondersafety.com). Standard: If channelizing devices are not used, the temporary lane separator shall contain retroreflectorization to enhance its visibility. 14 The retroreflective material used on channelizing devices shall have a smooth, sealed outer surface that will display a similar color day or night. Advance warning signs may be used singly or in combination. The sign message should be brief, legible, and clear. Standard route markings, where temporary route changes are necessary, Directional signs and street name signs, and. Standard: 01 When one roadway of a normally divided highway is closed, with two-way vehicular traffic maintained on the other roadway, the Two-Way Traffic (W6-3) sign (see Figure 6F-4) should be used at the beginning of the two-way vehicular traffic section and at intervals to remind road users of opposing vehicular traffic. 01 The ROAD (STREET) CLOSED (R11-2) sign (see Figure 6F-3) should be used when the roadway is closed to all road users except contractors' equipment or officially authorized vehicles. If the bottom of a secondary sign that is mounted below another sign is mounted lower than 7 feet above a pedestrian sidewalk or pathway (see Section 6D.02), the secondary sign should not project more than 4 inches into the pedestrian facility. (wn ) variable noun [oft without N] A warning is an advance notice of something that will happen, often something unpleasant or dangerous . 29 Portable changeable message signs should be sited and aligned to provide maximum legibility and to allow time for road users to respond appropriately to the portable changeable message sign message. 15 Type 1 or Type 2 Barricades are intended for use in situations where road user flow is maintained through the TTC zone. If you are following another vehicle into a curve, drop back and create a ______ cushion to maneuver in the event that the driver ahead has a problem. 02 The END BLASTING ZONE sign may be placed either with or preceding the END ROAD WORK sign. Painting over existing pavement markings with black paint or spraying with asphalt shall not be accepted as a substitute for removal or obliteration. Signs are not typically used to confirm rules of the road. Guidance: Option: 01 An EXIT ONLY (E5-3) sign (see Figure 6F-5) may be used to supplement other warning signs where work is being conducted in the vicinity of an exit ramp and where the exit maneuver for vehicular traffic using the ramp is different from the normal condition. They are yield signs. 03 Although drums are most commonly used to channelize or delineate road user flow, they may also be used alone or in groups to mark specific locations. A FINES HIGHER, FINES DOUBLE, or $XX FINE plaque (see. The message should be as brief as possible and should contain three thoughts (with each thought preferably shown on its own line) that convey: The problem or situation that the road user will encounter ahead, The location of or distance to the problem or situation, and. Enter a curve slower than the posted speed if your vehicle has a high center of gravity or if surface _____________ is less than ideal. Advance Auto Parts (AAP-0.03%) shares have been smashed this year. 01 The Flagger (W20-7) symbol sign (see Figure 6F-4) should be used in advance of any point where a flagger is stationed to control road users. 13 Temporary traffic control signals shall not be located within 200 feet of a grade crossing unless the temporary traffic control signal is provided with preemption in accordance with Section 4D.27, or unless a uniformed officer or flagger is provided at the crossing to prevent vehicles from stopping within the crossing. 01 Shoulder Work signs (see Figure 6F-4) warn of maintenance, reconstruction, or utility operations on the highway shoulder where the roadway is unobstructed. If used to channelize vehicular traffic at night, longitudinal channelizing devices should be supplemented with retroreflective material or delineation for improved nighttime visibility. Temporary traffic barriers, including shifting portable or movable barriers, are devices designed to help prevent penetration by vehicles while minimizing injuries to vehicle occupants, and to protect workers, bicyclists, and pedestrians. TMIAs. Signs mounted on portable supports may be placed within the roadway itself. Opposing traffic lane dividers shall not be placed across pedestrian crossings. Option: 01 The CENTER LANE CLOSED AHEAD (W9-3) sign (see Figure 6F-4) should be used in advance of that point where work occupies the center lane(s) and approaching motor vehicle traffic is directed to the right or left of the work zone in the center lane. 03 If used to channelize vehicular traffic at night, longitudinal channelizing devices should be supplemented with retroreflective material or delineation for improved nighttime visibility. A vehicle-mounted arrow board should be provided with remote controls. 03 Lighting devices may be used to supplement retroreflectorized signs, barriers, and channelizing devices. 02 Special regulatory signs should comply with the general requirements of color, shape, and alphabet size and series. Warning signs give notice of conditions that are potentially hazardous to traffic. Guidance: Existing pavement markings shall be maintained in all long-term stationary (see. 02 Longitudinal rumble strips consist of a series of rough-textured or slightly raised or depressed road surfaces located along the shoulder to alert road users that they are leaving the travel lanes. The Supplementary Distance plaque with the legend NEXT XX MILES shall not be used in conjunction with any sign other than a warning sign, nor shall it be used alone. 01 The SURVEY CREW (W21-6) sign (see Figure 6F-4) should be used to warn of surveying crews working in or adjacent to the roadway. 01 TTC zone signs convey both general and specific messages by means of words, symbols, and/or arrows and have the same three categories as all road user signs: regulatory, warning, and guide. Pulaski County and Motorsport Park leaders talk about SRX Race Option: They shall be mounted on crashworthy supports so that the reflecting unit is approximately 4 feet above the near roadway edge. Standard: 03 The Opposing Traffic Lane Divider (W6-4) sign (see Figure 6F-4) shall be an upright, retroreflective orange-colored sign placed on a flexible support and sized at least 12 inches wide by 18 inches high. 07 Raised pavement markers should be considered for use along surfaced detours or temporary roadways, and other changed or new travel-lane alignments. Option: 20 When a message is divided into two phases, the display time for each phase should be at least 2 seconds, and the sum of the display times for both of the phases should be a maximum of 8 seconds. Barricade rails should be supported in a manner that will allow them to be seen by the road user, and in a manner that provides a stable support that is not easily blown over or displaced. Guidance: Delineators used along the left-hand side of one-way roadways shall be yellow. Type B High-Intensity Flashing warning lights are used to warn road users during both daylight and nighttime hours that they are approaching a potentially hazardous area. The bottom rail shall have a length of 24 inches and a height of 8 inches. Standard: A Street Name sign should be placed above, or the street name should be incorporated into, a DETOUR (M4-9) sign to indicate the name of the street being detoured. The arrow board shall be mounted on a vehicle, a trailer, or other suitable support. Traffic control devices and other construction materials and features should not intrude into the usable width of the sidewalk, temporary pathway, or other pedestrian facility. Temporary lane separators may be used to channelize road users, to divide opposing vehicular traffic lanes, to divide lanes when two or more lanes are open in the same direction, and to provide continuous pedestrian channelization. Type C arrow boards are intended to be used on high-speed, high-volume motor vehicle traffic control projects. Standard: Option: Option: 03 Where two or more lanes are being shifted, a W24-1 (or Double Reverse Turn sign showing one lane) sign with an ALL LANES (W24-1cP) plaque (see Figure 6F-4) may be used instead of a sign that illustrates the number of lanes. The Advance Street Name (W16-8 or W16-8aP) plaque may be used with any Intersection Warning sign or Advance Traffic Control sign. Guidance: Warning signs used for TTC incident management situations may have a black legend and border on a fluorescent pink background. However, these shadow vehicles might themselves cause injuries to occupants of the errant vehicles if they are not equipped with truck-mounted attenuators. 02 Where the height of the retroreflective material on the vertical panel is 36 inches or more, a stripe width of 6 inches shall be used. 01 Motorized Traffic (W8-6, W11-10) signs may be used to alert road users to locations where unexpected travel on the roadway or entries into or departures from the roadway by construction vehicles might occur. Advance warning of restriction or prohibition ahead road sign | UK 01 The Lane(s) Closed sign (see Figure 6F-4) shall be used in advance of that point where one or more through lanes of a multi-lane roadway are closed. To separate vehicular traffic, bicyclists, and pedestrians from the work area such as false work for bridges and other exposed objects. On freeways and expressways, the RIGHT (LEFT) SHOULDER CLOSED XX FT or AHEAD (W21-5b) sign followed by RIGHT (LEFT) SHOULDER CLOSED (W21-5a) sign should be used in advance of the point where the shoulder work occurs and should be preceded by a ROAD WORK AHEAD sign. 616.5 Flagger Control (MUTCD Chapter 6E) Standard: Option: 07 Where any part of the roadway is obstructed or closed by work activities or incidents, advance warning signs should be installed to alert road users well in advance of these obstructions or restrictions. 17 Particular attention should be given to maintaining the channelizing devices to keep them clean, visible, and properly positioned at all times. Crash cushions in TTC zones help protect the drivers from the exposed ends of barriers, fixed objects, shadow vehicles, and other obstacles. The bottom of the bottom surface shall be no higher than 2 inches above the ground. Road users have difficulties in reading messages displayed in more than two phases on a typical three-line portable changeable message sign. 02 Regulatory signs are generally rectangular with a black legend and border on a white background. 06 At pedestrian crossing locations, temporary lane separators shall have an opening or be shortened to provide a pathway that is at least 60 inches wide for crossing pedestrians. Type B arrow boards are appropriate for intermediate-speed facilities and for maintenance or mobile operations on high-speed roadways. 18 Road users have difficulties in reading messages displayed in more than two phases on a typical three-line portable changeable message sign. Temporary markings are those pavement markings or devices that are placed within TTC zones to provide road users with a clearly defined path of travel through the TTC zone when the permanent markings are either removed or obliterated during the work activities. Where distances are not displayed on warning signs as part of the message, a supplemental plaque with the distance legend may be mounted immediately below the sign on the same support. Where roadway or road user conditions require greater emphasis, larger than standard size warning signs should be used, with the symbol or legend enlarged approximately in proportion to the outside dimensions. b. roadside services. The two types of crash cushions that are used in TTC zones are stationary crash cushions and truck-mounted attenuators. The SIDEWALK CLOSED (R9-9) sign should be installed at the beginning of the closed sidewalk, at the intersections preceding the closed sidewalk, and elsewhere along the closed sidewalk as needed. Option: 14 Type B High-Intensity Flashing warning lights are used to warn road users during both daylight and nighttime hours that they are approaching a potentially hazardous area. 11 Where distances are not displayed on warning signs as part of the message, a supplemental plaque with the distance legend may be mounted immediately below the sign on the same support. 5 Warning Signs Construction and maintenance warning signs are used extensively in street and highway work zones. A high-level warning device (flag tree) may supplement other TTC devices in TTC zones. Guidance: Providing a barrier-protected work space for short-term closures and providing unbalanced flow to accommodate changes in the direction of peak-period traffic flows are two of the advantages of using movable barriers. 02 Besides the warning signs specifically related to TTC zones, several other warning signs in Part 2 may apply in TTC zones. 03 Existing pavement markings shall be maintained in all long-term stationary (see Section 6G.02) TTC zones in accordance with Chapters 3A and 3B, except as otherwise provided for temporary pavement markings in Section 6F.78. 04 On freeways and expressways, the RIGHT (LEFT) SHOULDER CLOSED XX FT or AHEAD (W21-5b) sign followed by RIGHT (LEFT) SHOULDER CLOSED (W21-5a) sign should be used in advance of the point where the shoulder work occurs and should be preceded by a ROAD WORK AHEAD sign. 02 The four primary functions of temporary traffic barriers are: Option: Each barricade rail shall be 8 to 12 inches wide. 07 All traffic control devices used for construction, maintenance, utility, or incident management operations on a street, highway, or private road open to public travel (see definition in Section 1A.13) shall comply with the applicable provisions of this Manual. Where any part of the roadway is obstructed or closed by work activities or incidents, advance warning signs should be installed to alert road users well in advance of these obstructions or restrictions. 13 The arrow board shall have suitable elements capable of the various operating modes. 08 Movable barriers are capable of being repositioned laterally using a transfer vehicle that travels along the barrier. The R11-2 sign should be accompanied by appropriate warning and detour signing. Option: Support: In order to mitigate the effect of striking the upstream end of a temporary traffic barrier, the end shall be installed in accordance with AASHTO's "Roadside Design Guide" (see Section 1A.11) by flaring until the end is outside the acceptable clear zone or by providing crashworthy end treatments. Temporary traffic barriers, including their end treatments, shall be crashworthy. An arrow board shall be a sign with a matrix of elements capable of either flashing or sequential displays. Utility, maintenance, or construction activities on highways are frequently conducted during nighttime periods when vehicular traffic volumes are lower. Actual distance from a warning sign to the condition should be close to the stated distance on the sign, but accuracy should not be at the expense of sign visibility. Option: Devices used to channelize pedestrians shall be detectable to users of long canes and visible to persons having low vision. 04 A FINES HIGHER, FINES DOUBLE, or $XX FINE plaque (see Section 2B.17 and Figure 6F-3) may be mounted below the Speed Limit sign if increased fines are imposed for traffic violations within the TTC zone. Also, State Departments of Transportation and local agencies might have expanded the NCHRP Report 350 crashworthy criteria to apply to certain other roadside appurtenances. 03 The Shoulder Drop Off (W8-17) sign (see Figure 6F-4) should be used when an unprotected shoulder drop-off, adjacent to the travel lane, exceeds 3 inches in depth for a continuous length along the roadway, based on engineering judgment. SRTS Guide: Marking and Signing Crosswalks - Safe Routes Info Rigid and flexible roll-up signs may be used for mobile, short duration and short-term stationary work. A barricade is a portable or fixed device having from one to three rails with appropriate markings and is used to control road users by closing, restricting, or delineating all or a portion of the right-of-way. 01 The BLASTING ZONE AHEAD (W22-1) sign (see Figure 6F-4) shall be used in advance of any TTC zone where explosives are being used. Guidance: 27 Portable changeable message signs should be used as a supplement to and not as a substitute for conventional signs and pavement markings. 06 The DETOUR (M4-9) sign (see Figure 6F-5) should be used for unnumbered highways, for emergency situations, for periods of short durations, or where, over relatively short distances, road users are guided along the detour and back to the desired highway without route signs. Advance Warning Signs | Department of Transportation 12 The R9-8 through R9-11a series, R11 series, W1-6 through W1-8 series, M4-10, E5-1, or other similar type signs (see Figures 6F-3, 6F-4, and 6F-5) may be used on portable sign supports that do not meet the minimum mounting heights provided in Paragraphs 4 through 6 for longer than 3 days. When used with orange TTC zone signs, this plaque shall have a black legend and border on an orange background. If alterations are made to specific traffic control device supports that have been successfully crash tested in accordance with NCHRP Report 350, the altered supports might not be considered to be crashworthy. Temporary raised islands shall be used only in combination with pavement striping and other suitable channelizing devices.
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