549 PAVEMENT MARKINGS
From MDOT Policy Manual
- Apply durable and nondurable pavement markings (lines, letters, numbers, arrows and symbols) to various surfaces at locations and in patterns as specified or as directed.
- As specified.
- 549.03.01 Quality Control (QC). Submit a proposed Quality Control Plan (QCP) at least 30 days prior to the pre-striping meeting.
- Address procedures for random sampling as specified in MSMT 729. Provide detail as to how the equipment and material will be controlled to ensure conformance with the specifications. Include the following.
- (a) Manufacturer’s application recommendations,
- (b) Personnel certifications,
- (c) Inspection and record keeping procedures,
- (d) Minimum frequencies of sampling and testing as specified.
- Detail when and how corrective actions will be taken for unsatisfactory construction practices and deviations from specifications. Deviations from the QCP shall be cause for immediate suspension of the marking operation. Operations will not resume without approval.
- (a) Certified Technicians. MSMT 729. Provide certified technicians to perform quality control testing and sampling. The technicians shall demonstrate that they have a thorough knowledge of sampling and testing procedures. Duties shall include:
- (1) Perform quality control during the marking operations in conformance with the approved QCP.
- (2) Identify the location of quality control tests. Should a certified technician be delinquent in any of their duties as determined, then the technician’s certification shall become invalid and a recertification is required.
- (3) All pavement marking operations shall be suspended until a certified replacement technician is provided.
- (b) Records. Maintain complete records of quality control inspection results, including actions taken to correct problems. Submit a copy of the QC results daily, signed by the certified technician. Identify the location of the following quality control tests.
- (1) Ambient temperature.
- (2) Pavement surface temperature.
- (3) Material temperature.
- (4) Material thickness.
- (5) Retroreflectivity.
- (6) Alignment.
- (7) Color.
- 549.03.02 Quality Assurance (QA). The AdministrationShall mean any one of the Administrations within the Maryland Department of Transportation, as listed in GP 1.02. will provide certified technicians to conduct quality assurance to:
- (a) Perform independent sampling and testing.
- (b) Periodically observe QC testing.
- (c) Direct additional sampling and performing additional tests at any time and at any location.
- (d) Monitor conformance with the QCP.
- (e) Evaluate quality control results.
- QA testing will provide the basis for final acceptance. Independent assurance audits will be performed to confirm and assure that both the quality control personnel's test methods and quality control test equipment conform to specifications.
- 549.03.03 Placement. Do not begin placement operations until the QCP is approved and a walkthrough with the EngineerAny person designated by the Administrator or the procurement officer, acting directly or through his duly authorized representative, such representative acting within the scope of the particular duties assigned to him or of the authority given him. and pavement marking foreman has been performed to approve the layout.
- 549.03.04 Widths. The traveled way lane widths and width of longitudinal lines shall be as specified. Lane widths shall be measured from center to center of the lane lines once a control line is established for the lane configuration of the roadway. When measurements are taken from existing longitudinal lines, the point of reference shall be the center of the single line or the center of the space between dual lines. The traveled way lane widths are in compliance when they have an acceptable appearance and are within 2 in. of the proposed lane widths.
- 549.03.05 Alignment. Place markings in a straight and uniform manner. Lane lines are in compliance when they have an acceptable appearance and are visually in alignment, with no more than a 3/8 in. variation in any 40 ft section of traveled way. Maintain longitudinal alignment through all intersections and breaks, even though the lines may discontinue. Do not apply markings over longitudinal joints. Offset the markings 2 in. Place surface applied tape back 1 in. from transverse joints or cracks.
- 549.03.06 Layout Markings. Remove layout markings that detract from the overall appearance or function of the final markings as determined and at no additional cost.
- 549.03.07 Cleaning Pavement Surfaces. Prior to application, clean pavement surfaces of oil, dirt, grease, concrete laitance and other contaminants to a width 4 to 6 in. wider than the markings to be applied.
- 549.03.08 Marking Removal. Section 558. Remove existing pavement markings that conflict with new or altered traffic patterns. Use an approved method, and ensure that the pavement surface is not damaged by the process. Repair or replace damaged pavement at no additional cost.
- 549.03.09 Quality Control Test Strips. Conduct a quality control strip at the beginning of each day’s operations for the contract or job to demonstrate that the application equipment is working properly and applying markings as required. Repeat the demonstration whenever there is a change in the equipment settings or as directed when the quality of the line being applied is in question. Authorization to proceed will be given when the quality control test indicates conformance. If the application of the control strip test strip is on the actual roadway, correct any application that is not in compliance.
- 549.03.10 Curing. Protect the markings until dry or cured by placing warning devices per MdMUTCDMaryland Manual on Uniform Traffic Control Devices or as approved. If a vehicle damages uncured markings, reapply the markings and remove marks left on the pavement by the vehicle at no additional cost. For pavements in service, only one lane of traffic will be permitted to close at a time.
- 549.03.11 Observation Period. Repair any defects in materials and workmanship of the pavement markings for a period of 180 days for durable and 60 days for nondurable materials from the date the pavement is opened to traffic. The observation period for inlaid tape is 365 days. Time charges will not be assessed during the observation period provided all other work is complete. At the end of the observation period, the pavement markings will be inspected for durability, color, and retroreflectivity. The ContractorAny person having a Contract with a procurement agency. Contractor does not include an employee with an employment Contract, or an employee organization with a collective bargaining agreement. will be informed of pavement markings that have failed and that require corrective action. Pavement markings will be failed for any of the following conditions.
- (a) More than 5 percent of the substrate is exposed in any 2000 ft section of longitudinal marking.
- (b) Retroreflectance values have dropped below the minimum retroreflectivity specified.
- (c) Marking is discolored when compared visually with the color chips.
- Restripe or remove and replace all failed markings within 30 days of receiving written notification.
549.04 MEASUREMENT AND PAYMENT.
- Payment for furnishing and applying pavement marking (lines, letters, numbers, arrows and symbols) will be made under the pertinent pavement markings items. Quality control will not be measured but the cost will be incidental to the other pertinent items specified.
- 549.04.01 Removal, Replacement, or Corrective Actions. Provide corrective actions for markings unsatisfactorily installed or that fail during the observation period as determined and at no additional cost, including Maintenance of Traffic. The current road user fee will also be applied when traffic disruption occurs during corrective actions.