Difference between revisions of "616.8 Typical Applications (MUTCD 6H)"
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!style="background:#ffcc99" colspan="4" align="center"| Work on the Shoulder (see [[616.7 Type of Temporary Traffic Control Zone Activities (MUTCD 6G)#616.7.7 Work on the Shoulder with No Encroachment (MUTCD 6G.07)|EPG 616.7.7]] and [[616.7 Type of Temporary Traffic Control Zone Activities (MUTCD 6G)#616.7.8 Work on the Shoulder with Minor Encroachment (MUTCD 6G.8)|EPG 616.7.8]]) | !style="background:#ffcc99" colspan="4" align="center"| Work on the Shoulder (see [[616.7 Type of Temporary Traffic Control Zone Activities (MUTCD 6G)#616.7.7 Work on the Shoulder with No Encroachment (MUTCD 6G.07)|EPG 616.7.7]] and [[616.7 Type of Temporary Traffic Control Zone Activities (MUTCD 6G)#616.7.8 Work on the Shoulder with Minor Encroachment (MUTCD 6G.8)|EPG 616.7.8]]) | ||
|- | |- | ||
− | |align="left"| Shoulder Work on Two-Lane Highways | + | |align="left"| Shoulder Work on Two-Lane Highways ||align="center"| TA-3 ||align="center"| [[media:616.8.3 MT 2023.pdf|616.8.3 - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
|align="left"|Shoulder Work on Divided Highways ||align="center"| TA-5 ||align="center"| [[media:616.8.5 MT.pdf| 616.8.5 - MT]] ||align="center"| Jan. 2015 | |align="left"|Shoulder Work on Divided Highways ||align="center"| TA-5 ||align="center"| [[media:616.8.5 MT.pdf| 616.8.5 - MT]] ||align="center"| Jan. 2015 | ||
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|align="left"| Road Closed Beyond Junction Detour ||align="center"| TA-9 ||align="center"| [[media:616.8.9 MT.pdf|616.8.9 - MT, DECM]] ||align="center"| Jan. 2016 | |align="left"| Road Closed Beyond Junction Detour ||align="center"| TA-9 ||align="center"| [[media:616.8.9 MT.pdf|616.8.9 - MT, DECM]] ||align="center"| Jan. 2016 | ||
|- | |- | ||
− | |align="left"| Lane Closure on Two-Lane Highways | + | |align="left"| Lane Closure on Two-Lane Highways Using Flaggers ||align="center"| TA-10 ||align="center"| [[media:616.8.10 MT 2023.pdf|616.8.10 - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
− | |align="left"| Lane Closure on Two-Lane Highways | + | |align="left"| Lane Closure on Two-Lane Highways Using AFAD Red Amber Signal System ||align="center"| TA-10b ||align="center"| [[media:616.8.10b MT 2023.pdf|616.8.10b - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
− | |align="left"| Lane Closure on Two-Lane Highways | + | |align="left"| Lane Closure on Two-Lane Highways Using Portable Signal Flagging Device ||align="center"| TA-10d ||align="center"| [[media:616.8.10d MT 2023.pdf|616.8.10d - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
|align="left"| Side Roads Entering Work Zones ||align="center"| TA-10g ||align="center"| [[media:616.8.10g MT 2019.pdf|616.8.10g - MT]] ||align="center"| June 2019 | |align="left"| Side Roads Entering Work Zones ||align="center"| TA-10g ||align="center"| [[media:616.8.10g MT 2019.pdf|616.8.10g - MT]] ||align="center"| June 2019 | ||
|- | |- | ||
− | |align="left"| Lane Closure on Two-Lane Highways | + | |align="left"| Lane Closure on Two-Lane Highways ||align="center"| TA-11 ||align="center"| [[media:616.8.11 MT 2023.pdf|616.8.11 - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
− | |align="left"| Lane Closure on Two-Lane Highways | + | |align="left"| Lane Closure on Two-Lane Highways Using Traffic Control Signals ||align="center"| TA-12 ||align="center"| [[media:616.8.12 MT 2023.pdf|616.8.12 - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
|align="left"| Work in the Center of a Road with Low Traffic Volumes ||align="center"| - ||align="center"| N/A in MoDOT ||align="center"| - | |align="left"| Work in the Center of a Road with Low Traffic Volumes ||align="center"| - ||align="center"| N/A in MoDOT ||align="center"| - | ||
|- | |- | ||
− | |align="left"| Mobile Operation on Two-Lane Highways | + | |align="left"| Mobile Operation on Two-Lane Highways ||align="center"| TA-17 ||align="center"| [[media:616.8.17 MT 2023.pdf|616.8.17 - MT]] ||align="center"| Jan. 2023 |
|- | |- | ||
|align="left"| Centerline-Edgeline Striping on Two-Lane Highways ||align="center"| TA-17b ||align="center"| [[media:616.8.17b MT.pdf|616.8.17b - MT]] ||align="center"| Jan. 2016 | |align="left"| Centerline-Edgeline Striping on Two-Lane Highways ||align="center"| TA-17b ||align="center"| [[media:616.8.17b MT.pdf|616.8.17b - MT]] ||align="center"| Jan. 2016 |
Revision as of 07:49, 6 January 2023
- Lane Closure on Two-Lane Highways Using TMA Flaggers - DE/CM/MT |
Contents
616.8.1 Listing of Typical Applications
Listing of Typical Applications for Maintenance
(TAs for Design and Construction and Materials are also available) |
Typical Application Description | TA No. | Maintenance Figure Number | Effective Date |
---|---|---|---|
Work Outside of the Shoulder (see EPG 616.7.6) | |||
Work Beyond the Shoulder on Divided and Undivided Highways | TA-1 | 616.8.1 - MT | Jan. 2016 |
Blasting Zone | - | Contact district personnel* | - |
Work on the Shoulder (see EPG 616.7.7 and EPG 616.7.8) | |||
Shoulder Work on Two-Lane Highways | TA-3 | 616.8.3 - MT | Jan. 2023 |
Shoulder Work on Divided Highways | TA-5 | 616.8.5 - MT | Jan. 2015 |
Work Within the Traveled Way of a Two-Lane Highway (see EPG 616.7.10) | |||
Highway Closure | TA-8 | 616.8.8 - MT | Jan. 2016 |
Closure of Existing Bridges or Non-Traversable Roads | TA-8a | 616.8.8a - MT, DECM | May 2018 |
Road Closed Beyond Junction Detour | TA-9 | 616.8.9 - MT, DECM | Jan. 2016 |
Lane Closure on Two-Lane Highways Using Flaggers | TA-10 | 616.8.10 - MT | Jan. 2023 |
Lane Closure on Two-Lane Highways Using AFAD Red Amber Signal System | TA-10b | 616.8.10b - MT | Jan. 2023 |
Lane Closure on Two-Lane Highways Using Portable Signal Flagging Device | TA-10d | 616.8.10d - MT | Jan. 2023 |
Side Roads Entering Work Zones | TA-10g | 616.8.10g - MT | June 2019 |
Lane Closure on Two-Lane Highways | TA-11 | 616.8.11 - MT | Jan. 2023 |
Lane Closure on Two-Lane Highways Using Traffic Control Signals | TA-12 | 616.8.12 - MT | Jan. 2023 |
Work in the Center of a Road with Low Traffic Volumes | - | N/A in MoDOT | - |
Mobile Operation on Two-Lane Highways | TA-17 | 616.8.17 - MT | Jan. 2023 |
Centerline-Edgeline Striping on Two-Lane Highways | TA-17b | 616.8.17b - MT | Jan. 2016 |
Work Within the Traveled Way of an Urban Street (see EPG 616.7.11) | |||
Lane Closure on a Minor Street | - | N/A in MoDOT | - |
Highway Closure | TA-8 | 616.8.8 - MT | Jan. 2016 |
Closure of Existing Bridges or Non-Traversable Roads | TA-8a | 616.8.8a - MT, DECM | May 2018 |
Work Within the Traveled Way at an Intersection and on Sidewalks (see EPG 616.7.13) | |||
Lane Closure on Near Side of Intersection | TA-21 | 616.8.21 - MT | Jan. 2023 |
Lane Closure of Right Lane on Far Side of Intersection | TA-22 | 616.8.22 - MT | Jan. 2023 |
Lane Closure of Left Lane on Far Side of Intersection | TA-23 | 616.8.23 - MT | Jan. 2023 |
Sidewalk Detour or Diversion | TA-28 | 616.8.28 - MT | Oct. 2017 |
Crosswalk Closures and Pedestrian Detours | TA-29 | 616.8.29 - MT | Oct. 2017 |
Half Road Closure on the Far Side of an Intersection | - | Contact district personnel* | - |
Multiple Lane Closures at an Intersection | - | Contact district personnel* | - |
Closure in the Center of an Intersection | - | Contact district personnel* | - |
Closure at the Side of an Intersection | - | Contact district personnel* | - |
Work Within the Traveled Way of a Multi-Lane, Non-Access Controlled Highway (see EPG 616.7.12) | |||
Lane Closure on Multi-Lane Undivided Highways | TA-30 | 616.8.30 - MT | Jan. 2023 |
Operations in Two-Way Left Turn Lane on Multi-Lane | TA-30a | 616.8.30a - MT | Jan. 2016 |
Lane Closure Using Two-Way Left Turn Lane on Undivided Highways | TA-31 | 616.8.31 - MT | Jan. 2023 |
Lane Closure on Alternate Passing Lanes | TA-31a | 616.8.31a - MT | Jan. 2023 |
Lane Closure on Left or Right Lane on Divided Highway | TA-33 | 616.8.33 - MT | Jan. 2023 |
Mobile Operation on a Divided or Multi-Lane Highways | TA-35 | 616.8.35 - MT | Jan. 2023 |
Centerline and/or Lane Line Striping on Multi-Lane, Undivided Highways | TA-35a | 616.8.35a - MT | Jan. 2023 |
Edgeline Striping on Multi-Lane, Undivided Highways | TA-35b | 616.8.35b - MT | Jan. 2023 |
Lane Line and or Left Edgeline Striping on Divided Highways | TA-35c | 616.8.35c - MT | Jan. 2023 |
Right Edgeline Striping on Divided Highways | TA-35d | 616.8.35d - MT | Jan. 2023 |
Work Within the Traveled Way of a Freeway or Expressway (see EPG 616.7.14) | |||
Lane Closure of Interior Lane on Multi-Lane Highways | TA-37 | 616.8.37 - MT | May 2016 |
Lane Closure of Interior Lane on Multi-Lane Highways for Capacity | TA-38 | 616.8.38 - MT | May 2016 |
Lane Closure of Interior Lane on Multi-Lane Divided Highways | TA-38a | 616.8.38a - MT | May 2016 |
Lane Closure of Interior Lane on Multi-Lane Divided Highways | TA-38b | 616.8.38b - MT | May 2016 |
Lane Closure of Interior Lane on Multi-Lane Divided Highways | TA-38c | 616.8.38c - MT | May 2016 |
Median Crossover for an Entrance Ramp | - | Contact district personnel* | - |
Median Crossover for an Exit Ramp | - | Contact district personnel* | - |
Work in the Vicinity of an Exit Ramp | TA-42 | 616.8.42 - MT | Jan. 2016 |
Work on Ramps | TA-43 | 616.8.43 - MT | Jan. 2016 |
Work in the Vicinity of an Entrance Ramp | TA-44 | 616.8.44 - MT | Jan. 2016 |
Lane Closure at Interchange | TA-44a | 616.8.44a - MT | Jan. 2016 |
Work in the Vicinity of a Grade Crossing | TA-46 | 616.8.46 - MT | Sep. 2017 |
Excavations with Steel Plate or Back Fill - Undivided Highways | TA-47a | 616.8.47a - MT, DECM | Jan. 2016 |
Excavations with Steel Plate or Back Fill - Divided Highways | TA-47b | 616.8.47b - MT, DECM | Jan. 2016 |
Intermediate Lane Closure | TA-48 | 616.8.48 - MT, DECM | Jan. 2016 |
Signs in Narrow Medians | TA-49 | 616.8.49 - MT, DECM | Jan. 2016 |
Begin-End of Project Signing | TA-50 | 616.8.50 - MT, DECM | Feb. 2017 |
Temporary Reversible Lane Using Movable Barriers | - | Contact district personnel* | - |
Sequential Flashing Warning Light (see EPG 616.6.83) | |||
Sequential Flashing Warning Light | - | 616.6.83 | June 2012 |
* These typical applications may require additional guidance with the district and referencing to the MUTCD. |
Listing of Typical Applications for Design and Construction and Materials
Legend for the Design and Construction and Materials TAs |
(TAs for Maintenance are also available) |
Typical Application Description | TA No. | Design/Construction and Materials Figure Number | Effective Date |
---|---|---|---|
Spacing and Taper Lengths for Work Zone Signs, Channelizers and Concrete Barrier | TA-51 | 616.8.51 - DECM | Mar. 2016 |
Work Outside of the Shoulder (see EPG 616.7.6) | |||
Work Beyond the Shoulder on Divided and Undivided Highways | TA-1 | 616.8.1 - DECM | Jan. 2016 |
Blasting Zone | - | Contact district personnel* | - |
Work on the Shoulder (see EPG 616.7.7 and EPG 616.7.8) | |||
Work on the Shoulder on Divided and Undivided Highways | TA-3 | 616.8.3 - DECM | Jan. 2016 |
Shoulder Work on Divided and Undivided Highways Reduced Lane Widths | TA-5 | 616.8.5 - DECM | Jan. 2016 |
Shoulder Work with Minor Encroachment on Divided and Undivided Highways | TA-6 | 616.8.6 - DECM | Jan. 2016 |
Work Within the Traveled Way of a Two-Lane Highway (see EPG 616.7.10) | |||
Road Closure with a Diversion | TA-7 | 616.8.7 - DECM | Jan. 2016 |
Lane Shift on Two-Lane Roadway | TA-7a | 616.8.7a - DECM | Jan. 2016 |
Temporary Connection at Terminus of Divided Lane Facilities | TA-7b | 616.8.7b - DECM | July 2016 |
Highway Closure | TA-8 | 616.8.8 - DECM | Jan. 2016 |
Closure of Existing Bridges or Non-Traversable Roads | TA-8a | 616.8.8a - MT, DECM | May 2018 |
Road Closed Beyond Junction Detour | TA-9 | 616.8.9 - DECM, MT | Jan. 2016 |
Lane Closure on Two-Lane Road Using Flaggers | TA-10 | 616.8.10 - DECM | Jan. 2016 |
Lane Closure on Two-Lane Road Using Automated Flagger Assistance Devices (AFAD)-Red and Amber Signal System | TA-10a | 616.8.10a - DECM | Jan. 2016 |
Lane Closure on Two-Lane Road Using Portable Signal Flagging Devices (PSFD) | TA-10c | 616.8.10c - DECM | Jan. 2016 |
Flagger Control for Resurfacing or Moving Operation One-Lane Two-Way Operation | TA-10d | 616.8.10d - DECM | Jan. 2016 |
Lane Restriction on Two-Lane Roadway - Vertical Clearance at Bridge | TA-10e | 616.8.10e - DECM | Jan. 2016 |
Public Road Crossing Another Road Under Construction | TA-10f | 616.8.10f - DECM | Jan. 2016 |
Side Roads Entering Work Zones | TA-10g | 616.8.10g - DECM | Jan. 2016 |
Lane Closure on a Two-Lane Road Using Traffic Control Signals | TA-12 | 616.8.12 - DECM | Jan. 2016 |
Portable Traffic Signal, Temporary Traffic Signal and Concrete Barrier Details | TA-12a | 616.8.12a - DECM | Jan. 2016 |
Estimated Average Peak Hour Signal Delay for Signal Control - One-lane Two-way Operation | TA-12b | 616.8.12b - DECM | Jan. 2016 |
Work in the Center of a Road with Low Traffic Volumes | - | N/A in MoDOT | - |
Temporary Road Closure | TA-13 | 616.8.13 - DECM | Jan. 2016 |
Truck and Equipment Crossing or Entrance | TA-14 | 616.8.14 - DECM | Jan. 2016 |
Equipment Crossing or Entrance on Divided Highway Truck and Equipment Crossing or Entrance | TA-14a | 616.8.14a - DECM | Oct. 2017 |
Temporary Median Opening - Truck and Equipment Crossing or Entrance | TA-14b | 616.8.14b - DECM | Jan. 2016 |
Mobile Operation on Two-Lane Highways | TA-17 | 616.8.17 - DECM | Jan. 2016 |
Centerline-Edgeline Striping on Two-Lane Highways | TA-17a | 616.8.17a - DECM | May 2018 |
Work Within the Traveled Way of an Urban Street (see EPG 616.7.11) | |||
Lane Closure on a Minor Street | - | N/A in MoDOT | - |
Highway Closure | TA-8 | 616.8.8 - DECM | Jan. 2016 |
Closure of Existing Bridges or Non-Traversable Roads | TA-8a | 616.8.8a - MT, DECM | Jan. 2016 |
Work Within the Traveled Way at an Intersection and on Sidewalks (see EPG 616.7.13) | |||
Right Lane Closure at Intersection - Work on Near or Far Side | TA-22 | 616.8.22 - DECM | Jan. 2016 |
Right Lane Closure at Intersection - Work on Far Side Only | TA-22a | 616.8.22a - DECM | Jan. 2016 |
Right Lane Closure at Intersection - Through Lane at Intersection | TA-22b | 616.8.22b - DECM | Jan. 2016 |
Left Lane Closure at Intersection - Work on Near or Far Side | TA-23 | 616.8.23 - DECM | Jan. 2016 |
Left Lane Closure at Intersection - Work on Far Side Only | TA-23a | 616.8.23a - DECM | Jan. 2016 |
Half Road Closure on the Far Side of an Intersection | - | Contact district personnel* | - |
Multiple Lane Closures at an Intersection | - | Contact district personnel* | - |
Closure in the Center of an Intersection | - | Contact district personnel* | - |
Closure at the Side of an Intersection | - | Contact district personnel* | - |
Work Within the Traveled Way of a Multi-Lane, Non-Access Controlled Highway (see EPG 616.7.12) | |||
Operations in Two-Way Left Turn Lane on Multi-Lane Undivided Highways | TA-30a | 616.8.30a - DECM | Jan. 2016 |
Lane Closure Using Center Turn Lane - Lane Shift | TA-31 | 616.8.31 - DECM | Jan. 2016 |
Lane Closure on Alternate Passing Lanes | TA-31a | 616.8.31a - DECM | Jan. 2016 |
Two-Lane Closure on a 5-Lane Undivided Highway | TA-32 | 616.8.32 - DECM | July 2016 |
Stationary Lane Closure on a Divided Highway | TA-33 | 616.8.33 - DECM | Jan. 2016 |
Lane Closure with a Temporary Traffic Barrier | TA-34 | 616.8.34 - DECM | July 2016 |
Lane Closure with Width and Lane Restrictions | TA-34a | 616.8.34a - DECM | Jan. 2016 |
Mobile Operation on a Divided or Multi-Lane Highways | TA-35 | 616.8.35 - DECM | Jan. 2023 |
Centerline and/or Lane Line Striping on Multi-Lane, Undivided Highways | TA-35a | 616.8.35a - DECM | Jan. 2023 |
Work Within the Traveled Way of a Freeway or Expressway (see EPG 616.7.14) | |||
Double Lane Closure on a Freeway | TA-37 | 616.8.37 - DECM | Jan. 2016 |
Interior Lane Closure on a Freeway | TA-38 | 616.8.38 - DECM | Jan. 2016 |
Two Interior Lane Closure on a Freeway | TA-38a | 616.8.38a - DECM | Jan. 2016 |
Median Crossover on a Divided Highway, Sheet 1 of 2 | TA-39 | 616.8.39, Sheet 1 of 2 - DECM | Mar. 2019 |
Median Crossover on a Divided Highway, Sheet 2 of 2 | TA-39 | 616.8.39, Sheet 2 of 2 - DECM | May 2020 |
Temporary Median Crossover Roadway Design | TA-39a | 616.8.39a- DECM | July 2016 |
Median Crossover for an Entrance Ramp | - | Contact district personnel* | - |
Median Crossover for an Exit Ramp | - | Contact district personnel* | - |
Work in the Vicinity of an Exit Ramp | TA-42 | 616.8.42 - DECM | Jan. 2016 |
Partial Exit Ramp Closure | TA-43 | 616.8.43 - DECM | Jan. 2016 |
Work in the Vicinity of an Entrance Ramp | TA-44 | 616.8.44 - DECM | Jan. 2016 |
Excavations with Steel Plate or Back Fill - Undivided Highways | TA-47a | 616.8.47a - DECM, MT | Jan. 2016 |
Excavations with Steel Plate or Back Fill - Divided Highways | TA-47b | 616.8.47b - DECM, MT | Jan. 2016 |
Intermediate Lane Closure | TA-48 | 616.8.48 - DECM, MT | Jan. 2016 |
Signs in Narrow Medians | TA-49 | 616.8.49 - DECM, MT | Jan. 2016 |
Begin-End of Project Signing | TA-50 | 616.8.50 - DECM, MT | Feb. 2017 |
Temporary Reversible Lane Using Movable Barriers | - | Contact district personnel* | - |
Work in the Vicinity of a Grade Crossing (see EPG 616.7.18) | |||
Work in the Vicinity of a Grade Crossing | - | Contact district personnel* | - |
Sequential Flashing Warning Light (see EPG 616.6.83) | |||
Sequential Flashing Warning Light | - | 616.6.83 | June 2012 |
* These typical applications may require additional guidance with the district and referencing to the MUTCD. |
Support. EPG 616.7 contains discussions of typical TTC activities. EPG 616.8 presents typical applications for a variety of situations commonly encountered. The typical applications provided in Chapter 6H of the MUTCD, the state of the practice, along with engineering judgment, was used as the basis of the development of the typical application for the temporary traffic control on the state highway system. For construction projects, EPG 616 presents typical applications for work zones. EPG 616.23 presents typical applications for work performed by MoDOT maintenance personnel.
While not every situation is addressed, the information illustrated can generally be adapted to a broad range of conditions. In many instances, an appropriate TTC plan is achieved by combining features from various typical applications. For example, work at an intersection might present a near-side work zone for one street and a far-side work zone for the other street. These treatments are found in two different typical applications, while a third typical application shows how to handle pedestrian crosswalk closures. For convenience in using the typical application diagrams, Tables 616.3.4 and 616.3.5 are reproduced in this article.
Procedures for establishing TTC zones vary with such conditions as road configuration, location of the work, work activity, duration of work, road user volumes, road vehicle mix (buses, trucks, cars, motorcycles and bicycles), and road user speeds.
In general, the procedures illustrated represent minimum solutions for the situations depicted. Except for the notes (which are clearly classified using headings as being Standard, Guidance, Option, or Support), the information presented in the typical applications can generally be regarded as Guidance.
Option. Other devices may be added to supplement the devices and device spacing may be adjusted to provide additional reaction time or delineation. Fewer devices may be used based on field conditions.
Support. Figures and tables found throughout EPG 616 provide information for the development of TTC plans. Also, Table 616.3.4 is used for the determination of sign spacing and other dimensions for various area and roadway types.
Fig. 616.8 is the legend for the temporary traffic control typical applications. In many of the typical applications, sign spacings and other dimensions are indicated by letters using the criteria provided in Table 616.3.4. The taper lengths are provided in Table 616.3.5.
Most of the typical applications show TTC devices for only one direction.
616.8.2 Legend for Typical Applications
616.8.3 Examples of Highways
Divided Highway: Highway with physical separation of traffic in the opposite direction. | ||
Undivided Highway: Highway with no physical separation of traffic in the opposite direction. | ||
616.8.4 Recommended Advance Warning Sign Minimum Spacing
Speed Limit1, mph | Sign Spacing2, ft. | |
---|---|---|
Undivided Highway | Divided Highway | |
up to 35 | 2003 | 2003 |
40 to 45 | 350 | 500 |
50 to 55 | 500 | 1000 |
60 to 70 | 1000 | SA-1000 SB-1500 SC-2640 |
1 Speed limit is based on posted speed limit. | ||
2 Sign spacing may be adjusted, normally by increasing it, to accommodate field conditions and visibility. | ||
3 For urban low speed, minimum recommended spacing in MUTCD is 100 ft. |
616.8.5 Recommended Taper Length and Spacing
Speed Limit1, mph | Taper Length2, ft. | Channelizing Spacing 3, ft. | ||
---|---|---|---|---|
Shoulder4 (T1) | Lane5 (T2) | Tapers | Buffer/Work Areas | |
up to 35 | 70 | 245 | 356 | 406 |
40 to 45 | 150 | 540 | 406 | 806 |
50 to 55 | 185 | 660 | 507 | 807 |
60 to 70 | 235 | 840 | 607 | 1207 |
1 Speed limit is based on posted speed limit. 2 Taper lengths may be adjusted to accommodate crossroads, curves, intersections, ramps or other geometric features. 3 Channelizer spacing may be reduced to discourage traffic encroachment. 4 Based on 10 ft. shoulder width. 5 Based on 12 ft. lane width. 6 Spacing reduced to 1/2 at intersections. 7 Spacing may be reduced to 1/2 at intersections. |