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CALTRANS GENERAL NOTES
<br />1. NEITHER WORK ACTIVITY NOR STORAGE OF EQUIPMENT, VEHICLES, OR MATERIAL SHOULD OCCUR WITHIN A BUFFER
<br />SPACE.
<br />2. SIGNS ARE ONLY SHOWING TO THE PUBLIC WHEN IN USE.
<br />3. SIGNS AND CHANNELIZING DEVICES MUST BE RETROREFLECTIVE OR ILLUMINATED DURING NIGHT OPERATIONS.
<br />4. SIGN PANEL SIZES: 48'x48" ON ROADS
<br />5. SIGNS ARE SPACED PER CALTRANS 2018 REVISED STANDARD PLAN T9.
<br />6. CHANNELIZING DEVICE SPACING AND TAPER LENGTHS ARE PER CALTRANS 2018 REVISED STANDARD PLAN T9.
<br />7. NOTIFY THE LOCAL LAW ENFORCEMENT, FIRE, AND AMBULANCE COMPANIES WITHIN 72 HOURS BEFORE
<br />CONSTRUCTION BEGINS.
<br />8. CONTRACTOR TO MAKE SURE ALL TRAFFIC CONTROL EQUIPMENT MEETS ALL AGENCY REQUIREMENTS.
<br />9. REMOVE ALL CONFLICTING MARKINGS FOR LONG TERM OPERATIONS (3 DAYS OR LONGER).
<br />10. THE LOCATION OF THE SIGNS AS SHOWN ON THE ILLUSTRATIONS ARE GUIDELINES AND ACTUAL LOCATIONS WILL
<br />DEPEND UPON ALIGNMENT, GRADE, LOCATION OF STREET INTERSECTIONS AND 85% TILE SPEED LIMITS.
<br />11. WHILE CROSSING INTERSECTIONS DURING MOBILE WORK, WORK MUST FOLLOW THE FLOW OF TRAFFIC AND
<br />PROCEED ON A GREEN LIGHT.
<br />12. LOCAL CITY AND COUNTY AGENCIES SHALL BE NOTIFIED OF WORK, AS NEEDED.
<br />13. PEDESTRIAN ACCESS MUST BE MAINTAINED AS PER THE CALTRANS STANDARD PLANS AND SPECS AND ADA
<br />REQUIREMENTS.
<br />14. SIGN SPACING IS PROVIDED IN THE CALTANS STANDARD PLANS AND SPECS. TRAFFIC SPEEDS ARE BASED UPON
<br />RADAR MEASUREMENTS OF MOTORISTS. THE 85% TILE IS USED WHEN AVAILABLE TO PROVIDE A MORE ACCURATE
<br />REPRESENTATION OF MOTORISTS SPEEDS.
<br />15. ANY WORK WITHIN 200 FT OF A SIGNALIZED INTERSECTION WILL REQUIRE CONTACT AND COORDINATION WITH CITY
<br />AND COUNTY AGENCY PRIOR TO ANY WORK.
<br />16. QUALITY STANDARDS FOR TRAFFIC CONTROL DEVICES SHALL MEET CALTRANS STANDARD SPECIFICATION 12-3.01B.
<br />ALL TRAFFIC CONTROL DEVICES INCLUDING: SIGNS, BARRICADES, VERTICAL PANELS, DRUMS, WARNING LIGHTS,
<br />ARROWBOARDS, CHANGEABLE MESSAGE SIGNS, CONES AND TUBULAR MARKERS THAT MEET THE REQUIREMENTS
<br />OF AMERICAN TRAFFIC SAFETY SERVICES ASSOCIATION (ATSSA) GUIDLINES REFERENCED IN SS 12-3.01 B.
<br />17. THE NCHRP REPORT 476 PROVIDES GUIDELINES FOR DESIGN AND OPERATION OF NIGHTTIME TRAFFIC CONTROL FOR
<br />HIGHWAY MAINTENANCE AND CONSTRUCTION. SEE TYPICAL APPLICATIONS NWTA-1 THROUGH NWTA-7. COMPLY WITH
<br />ANSI 107-2004 FOR APPAREL. HIGHWAY CONSTRUCTION WORK LIGHTING SHALL BE PER CONSTRUCTION SAFETY
<br />ORDER 1523 ( CALIFORNIA CODE OF REGULATIONS TITLE 8, DIVISIONI, CHAPTER 4, SUBCHAPTER 4, ARTICLE 3,
<br />SECTION 1523 - ILLUMINATIONS).
<br />18. SIDEWALKS AT THE CONSTRUCTION LOCATION MAY BE CLOSED WITH ADEQUATE DETOURS. SIDEWALKS MAY ONLY BE
<br />CLOSED TO THROUGH TRAFFIC AND SHALL NOT PREVENT LOCAL PEDESTRIANS ACCESS. DETOURS SHALL NOT
<br />INCREASE THE PATH OF TRAVEL BY MORE THAN 500 FT. DETOUR ROUTES SHALL BE LIMITED TO EXISTING SIDEWALKS,
<br />PRIVATE PROPERTIES (SEE BELOW REQUIREMENTS) AND CROSSINGS AT ROADWAY INTERSECTIONS. TO THE
<br />MAXIMUM EXTENT FEASIBLE, THE ALTERNATE CIRCULATION PATH SHALL BE PROVIDED ON THE SAME SIDE OF THE
<br />STREET AS THE DISRUPTED ROUTE. WHERE IT IS FEASIBLE TO PROVIDE A SAME -SIDE ALTERNATE CIRCULATION PATH
<br />AND PEDESTRIANS WILL BE DETOURED, THE ALTERNATE PATH PROVIDE A SIMILAR LEVEL OF ACCESSIBILITY TO THAT
<br />OF THE EXISTING DISRUPTED ROUTE. THIS MAY INCLUDE THE INCORPORATION OF ACCESSIBLE PEDESTRIAN
<br />SIGNALS (APS), CURB RAMPS, OR OTHER ACCESSIBILITY FEATURES.
<br />19. PEDESTRIANS MAY BE DETOURED ONTO PRIVATE PROPERTY ONLY IF WRITTEN PERMISSION FROM THE PROPERTY
<br />OWNER IS OBTAINED ALONG WITH DOCUMENTATION INDICATING THAT THE CITY AND COUNTY WOULD NOT BE LIABLE
<br />(HOLD HARMLESS) IN THE EVENT OF AN ACCIDENT.
<br />20. DURING WORK HOURS, AT LEAST ONE WORKER SHALL BE ASSIGNED WITH THE RESPONSIBILITY TO ESCORT ELDERLY,
<br />DISABLED OR ANY OTHER PEDESTRIANS IN NEED OF ASSISTANCE THROUGH THE CONSTRUCTION SITE. A WORKER
<br />ASSIGNED WITH THIS RESPONSIBILITY MAY ALSO PARTICIPATE IN OTHER CONSTRUCTION ACTIVITIES; HOWEVER, THE
<br />ASSIGNED WORKER SHALL BE AWARE OF HIS OR HER RESPONSIBILITIES FOR PROVIDING THIS ASSISTANCE.
<br />MEASURES THAT SIMPLY CLOSE THE SIDEWALK, WITH THE EXCEPTION THAT PEDESTRIANS WILL CROSS SOMEWHERE
<br />ELSE DOES NOT ADEQUATELY SATISFY PEDESTRIAN ACCESS. PEDESTRIANS SHOULD NEVER BE DIRECTED/
<br />EXPECTED TO CROSS A MULTI -LANE ROADWAY AT ANY LOCATION OTHER THAN AT A SIGNAL (OR ALL -WAY STOP).
<br />ACCOMMODATIONS SHOULD BE MADE ON THE SAME SIDE OF ROADWAY AS WORK.
<br />21. THE TRAFFIC CONTROL WITHIN THE STATE RIGHT-OF-WAY SHALL BE TO STATE STANDARDS. THE CONTRACTOR
<br />SHALL INSTALL AND MAINTAIN ALL TRAFFIC CONTROL DEVICES AS NECESSARY TO MAINTAIN PUBLIC SAFETY. EXCEPT
<br />FOR INSTALLING, MAINTAINING, AND REMOVING TRAFFIC CONTROL DEVICES, ANY WORK ENCROACHING WITHIN 3
<br />FEET OF THE EDGE OF A TRAVEL LANE FOR AREAS WITH A POSTED SPEED LIMIT BELOW 45 MPH, OR 6 FEET OF THE
<br />EDGE OF A TRAVEL LANE FOR AREAS WITH A SPEED LIMIT POSTED AT 45 MPH OR HIGHER, SHALL REQUIRE CLOSING
<br />OF THAT TRAVEL LANE. USE OF A FLASHING ARROW BOARD IS MANDATORY.
<br />STAMPED 2021.09.17
<br />TABLE 1
<br />- For other offsets, use the following mprrgging taper length formula for L:
<br />For speed of 40 mph or less, L = WS /80
<br />For speed of 40 mph or mon:, L = WS
<br />Where: L = Taper length In feet
<br />W = Width of offset in feet
<br />S = Posted speed limit, off-peak 85th -percentile
<br />speed ppnor to work starting, or the anticipated
<br />opera8ng speed In mph
<br />Use for taper and tangent sections where there are no pavement marldngs or where
<br />there is a conflict between exisimg pavement markings and channelimm (CA).
<br />TABLE 2
<br />LONGITUDINAL BUFFER SPACE AND
<br />FLAGGER STATION SPACING
<br />TAPER LENGTH CRITERIA AND
<br />CHANNELIZING DEVICE SPACING
<br />—
<br />m h ft ft ft
<br />SPEED
<br />MINIMUM TAPER LENGTH'
<br />FOR WIDTH OF OFFSET 12 FEET (W)
<br />MAXIMUM CHANNELIZING
<br />DEVICE SPACING
<br />X I Y Z •'
<br />(S)
<br />TANGENT MERGING HIFfIN SHOULDER
<br />2L L L/2 L/3
<br />TAPER
<br />TANGENT CONFLICT
<br />m
<br />R ft ft ft
<br />ft
<br />ft
<br />ft
<br />EXPRESSWAY /FREEWAY
<br />80 40 27
<br />20
<br />40
<br />10
<br />598
<br />250 125 63 42
<br />25
<br />50
<br />12
<br />30
<br />3U— 180 90 60
<br />30
<br />60
<br />15
<br />40
<br />517— 160 107
<br />40
<br />80
<br />20
<br />540 270 180
<br />45
<br />90
<br />22
<br />1200 800 300 200
<br />50
<br />100
<br />25
<br />55
<br />880 330 220
<br />50
<br />100
<br />25
<br />1440 720 360 240
<br />50
<br />100
<br />25
<br />570
<br />5 7
<br />5
<br />is
<br />- For other offsets, use the following mprrgging taper length formula for L:
<br />For speed of 40 mph or less, L = WS /80
<br />For speed of 40 mph or mon:, L = WS
<br />Where: L = Taper length In feet
<br />W = Width of offset in feet
<br />S = Posted speed limit, off-peak 85th -percentile
<br />speed ppnor to work starting, or the anticipated
<br />opera8ng speed In mph
<br />Use for taper and tangent sections where there are no pavement marldngs or where
<br />there is a conflict between exisimg pavement markings and channelimm (CA).
<br />TABLE 2
<br />LONGITUDINAL BUFFER SPACE AND
<br />FLAGGER STATION SPACING
<br />DOWNGRADE Min D
<br />SPEED' Min D"
<br />—
<br />m h ft ft ft
<br />ft
<br />115 116 120 —7w-
<br />100
<br />158 165
<br />173
<br />30 2W__205 215
<br />227
<br />57 7
<br />7
<br />40 3135--5
<br />500 500
<br />378
<br />EXPRESSWAY /FREEWAY
<br />1 so 425 446
<br />520
<br />NfZ878
<br />598
<br />85 845 882
<br />77
<br />• -Speed is posted
<br />speed limit, offpeak 85th-pcentile
<br />prortoworting,oheanticipa
<br />operating speed in mph
<br />"- Longitudinal buffer space or flogger station spacing
<br />•" - Use on sustained downgmde steeper than -3 percent
<br />and longer than 1 mile.
<br />TABLE 3
<br />ADVANCE WARNING SIGN SPACING
<br />ROAD TYPE
<br />DISTANCE BETWEEN SIGNS'
<br />A B
<br />URBAN - 25 mph OR LESS
<br />100 100
<br />100
<br />URBAN - MORE THAN 25 mph to 40 mph
<br />250 250
<br />250
<br />URBAN - MORE THAN 40 mph
<br />350 350
<br />350
<br />RURAL
<br />500 500
<br />500
<br />EXPRESSWAY /FREEWAY
<br />1000 1500
<br />2640
<br />`- The distances am approximate, are intended for guidance
<br />purposes only, and should be applied with engineedng judgement.
<br />These dlstances should be adjusted by the Engineer for field conditions,
<br />if necessary, by increasing or decreasing the recommended distances.
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