104.02 Maintenance of Traffic (Mot)
CATEGORY 100 PRELIMINARY SECTION 104.02 — MAINTENANCE OF TRAFFIC (MOT)
104.02.01 Description
Maintain traffic safely and efficiently through and around the area affected by the work.
104.02.02 Materials
Traffic Materials Section 950
104.02.03 Construction
a.Maintenance of Existing Roadway. Maintain the existing roadway surface and shoulders, including crossroads, ramps, approaches, crossovers, medians, detour roads, entrances, and pavement markings within the limits of the project, throughout the duration of the Contract. Repair potholes, shoulder defects, and hazardous conditions that exist or develop throughout the duration of the Contract.
b.Existing Regulatory Signs, Warning Signs, Guide Signs, and Pavement Markings. Relocate, turn, completely cover with opaque material, or remove with the approval of the Engineer, signs that are not applicable due to temporary traffic conditions. Properly redisplay signs to traffic as soon as conditions warrant. Replace any signs misplaced or damaged by the Contractor's operations. Prior to construction and in the company of the Engineer, inventory and note the location, type, size, and color of all existing pavement markings, legends, and symbols. Submit the results on a marked up set of the Contract Plans or on Contractor prepared sketches or drawings.
c.Storage and Movement of Equipment, Material, and Vehicles. All equipment, material, storage, and parking areas shall have advance written approval from the Engineer. Employee vehicles shall not be parked within the right-of-way of the through highway, without a written exception. Equipment and material shall not be stored or permitted to stand in unprotected areas or open areas within 30 ft of traffic except as follows:
1.Approved traffic barrier is in place prior to storage of equipment and materials. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.02 Maintenance of Traffic (Mot)
2.Equipment and material is at least 4 ft behind traffic barrier as measured from the bottom, nontraffic side of the barrier.
3.Equipment or material is stored in conformance with the AASHTO Roadside Design Guide. Restore areas used for storage of equipment and material to original condition immediately upon completion of use, at no additional cost to the Administration. Vehicles and equipment shall enter and leave the work area in the direction of traffic flow. Work on or adjacent to the traveled way shall be performed in the direction of traffic flow, unless written approval is obtained prior to beginning the work. The Contractor's vehicles and equipment shall enter on and exit from the roadway at interchanges or legally allowed public use crossovers. Do not make U-turns across medians and crossovers signed FOR USE OF AUTHORIZED AND EMERGENCY VEHICLES ONLY, without written approval.
d.Warning Lights and Devices. Use warning lights and flags on warning signs as specified in the TCP, the Contract Documents, or as directed. During hours of darkness, attach one Type A low intensity flashing warning light to the traffic side of channelizing devices used to warn of a spot hazard. Attach two Type A low intensity flashing warning lights to the top of each Type III barricade.
e.General Requirements for Temporary Pavement Markings (TPMs). For pavement marking dimensions refer to Pavement Marking Dimension Table following (f)(10) below.
1.Temporary pavement markings are those markings placed upon the roadway to serve an area of work activity or a work phase for a period of time after which they are to be removed. When approved, a less than full complement of pavement markings and reduced dimension markings for dashed center lines and lane lines may be used, but for a period of not more than two weeks.
2.TPMs may be either full dimension or reduced dimension as specified in the Contract Documents or as directed.
3.Full dimension TPMs shall be in accordance with the MdMUTCD and the Pavement Marking Dimension Table following (f)(10). 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.02 Maintenance of Traffic (Mot)
4.Reduced dimension TPMs shall be in accordance with the MdMUTCD and the Pavement Marking Dimension Table following (f)(10), except that the dashed center lines and lane lines may consist of 4 ft segments and 36 ft gaps.
f.Specific Requirements for TPMs.
1.As a minimum, place all center and lane lines at the close of each day.
2.During the work day, while work activities are underway, clearly define all vehicle paths by center and lane lines, channelizing devices, signs, or other traffic control devices.
3.Along two-lane, two-way roadways, place a center line consisting of a continuous double solid yellow center line, a single dashed yellow center line at full dimension, or a single dashed yellow center line at reduced dimension as directed.
4.Mark and sign ‘no passing zones’ as specified or as directed. A no passing zone may be identified by signing for a period not to exceed seven days.
5.Along multilane undivided roadways, identify the center line using a continuous double solid yellow line. If a two-way left turn is present, see (6) below. If the roadway is three lanes, the center line may be either a continuous double solid yellow center line or, where passing is permitted in the single lane direction, a continuous single solid yellow and single dashed yellow combination center line. For the placement of no passing zones, see (f)(4) above.
6.Along multilane undivided roadways having a two-way left turn lane, the left- turn lane need not be marked provided that the lane is continuously delineated using channelizing devices spaced at no more than 200 ft. The devices shall separate the opposing flows of traffic and provide areas where left-turning vehicles may store while awaiting the opportunity to turn.
7.Along multilane roadways having reversible lanes, mark the lanes with the full complement of pavement markings as described in the MdMUTCD.
8.Where edge lines are not in place, delineate the edge of the roadway by using appropriate channelizing devices or other delineation.
9.Specific pavement marking, and complementary signing details are shown on the Temporary Traffic Control (TTC) Typical Applications. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.02 Maintenance of Traffic (Mot)
10.Contact the Office of Materials Technology (OMT) for the latest approved TPM materials. PAVEMENT MARKING DIMENSION TABLE LINE TYPE MATERIAL REQUIRED MINIMUM EFFECTIVE WIDTH, in. EXPRESSWAYS AND FREEWAYS OTHER ROADWAYS Lane Lines Paint 5 5 Preformed Tape 5 5 Lane Shifts, Lane Divides and Severe Alignment Changes Paint 5 5 Preformed Tape 5 5 Center Lines *See Note Paint 5 5 Preformed Tape 5 5 Edge Lines Paint 5 5 Preformed Tape 5 5 Ramp Edge Lines Paint 5 5 Preformed Tape 5 5 Gore Marking Paint 10 10 Preformed Tape 10 10 Auxiliary Paint or Preformed Tape Same as particular line being extended Same as particular line being extended Note: Provide a discernible space of 4 in. to 5 in. between double lines.
g.Channelizing Devices. Install traffic channelizing in accordance with the MdMUTCD, the Contract Documents, and the following:
1.Spacing in feet for channelizing devices in a taper shall be no more than the posted speed limit in mph.
2.Spacing in feet for channelizing devices in a tangent shall be no more than twice the posted speed limit in mph.
3.To define interchange gore areas or other unusual alignments, space channelizing devices at 25 ft intervals, unless the Engineer directs a closer spacing.
4.Space channelizing devices at approximately 6 ft intervals at driveways and intersections, so that sight distance at these locations is not restricted.
5.The Contractor’s name or identification mark may be placed in an inconspicuous location on the channelizing device, facing away from traffic. No advertising is permitted. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.02 Maintenance of Traffic (Mot)
2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.02.04 Measurement and Payment
Unless otherwise specified, Maintenance of Traffic will not be measured but will be paid for at the Contract lump sum price. The payment will be full compensation for relocating, turning, completely covering and uncovering or removing and resetting, maintaining in like new condition, and cleaning existing and temporary traffic signs and other traffic control devices. Included is the inventory of all existing pavement markings and the treatment of any other traffic control device not included in these Specifications but necessary for the fulfillment of the Contract requirements and implementation of the approved Traffic Control Plan, and for all material, labor, equipment, tools, and incidentals necessary to complete the work. Payment of the Contract lump sum price will be prorated and paid in equal amounts on each monthly estimate. The number of months used for prorating will be the number estimated to complete the work.
a.When additional Contract pay items for Maintenance of Traffic are specified in the Contract Documents, measurement and payment will conform to the pertinent pay items.
b.Cones, reflective collars, anchoring devices, STOP/SLOW paddles, sign flags, and warning lights will not be measured but the cost will be incidental to the Contract price for Maintenance of Traffic unless otherwise specified.
c.Temporary traffic control devices that need replacement shall be replaced immediately, as directed. The cost of replacement, including all material, labor, equipment and tools, will not be measured but will be incidental to the Contract price for Maintenance of Traffic except when specifically set up in the Contract Documents as a separate Contract pay item.
d.Material, equipment, and labor necessary for the construction and removal of temporary or detour roads will be measured and paid for at the Contract unit price for the pertinent items used.
104.02.04 01 When specified in the Contract Documents, Maintenance of Traffic will be
measured and paid for at the Contract price per unit day.
104.02.04 02 When there is no item in the Contract Documents, maintenance of traffic will not
be measured but the cost will be incidental to other pertinent items specified in the Contract Documents.
104.03 Temporary Raised Pavement Markers (Rpms)
2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 100 PRELIMINARY SECTION 104.03 — TEMPORARY RAISED PAVEMENT MARKERS (RPMS)
104.03.01 Description
Furnish, install, and remove as necessary, temporary RPMs.
104.03.02 Materials
Temporary RPMs QPL
104.03.03 Construction
Install temporary RPMs, as specified in the Contract Documents and in accordance with the manufacturer's recommendations.
104.03.04 Measurement and Payment
The payment will be full compensation for all material, labor, equipment, tools, and incidentals necessary to complete the work. Increases or decreases in quantities will not be a basis for renegotiation of the Contract unit price.
a.Temporary Raised Pavement Markers will be measured and paid for at the Contract unit price per each.
b.Removal of Temporary Raised Pavement Markers will be measured and paid for at the Contract unit price per each.
c.Reimbursement will be made at the Contract unit price for each marker damaged by snowplow operations.
Source: Maryland Standard Specifications for Construction and Materials, 2025 Edition. Pages 154–158 of 1,113.