Caltrans (California DOT) traffic control plan requirements
California requires traffic control plans signed and stamped by a California Registered Civil or Traffic Engineer. Conemap does not produce stamped plans. Use it to draft, then have a licensed engineer review and stamp before submitting.
This jurisdiction requires a PE stamp
Plans here must be signed and stamped by a licensed engineer. Conemap does not produce stamped plans — use it to draft, then have a licensed engineer review and stamp.
Published requirements
Transcribed from Caltrans (California DOT)'s own published document. Each entry cites where it came from and when it was last checked.
No published requirements recorded for this jurisdiction yet.
Source
https://dot.ca.gov/programs/traffic-operations/epAgencies revise these documents without notice. If something here is out of date, tell us at hello@conemap.com and it will be corrected. Report a discrepancy.
Taper length for a Caltrans (California DOT) work zone
Taper geometry is federal — it comes from MUTCD 11th Edition Tables 6B-3 and 6B-4 wherever you are. What Caltrans (California DOT) adds is the checklist above.
Posted speed limit, off-peak 85th-percentile speed prior to work starting, or anticipated operating speed.
How far traffic is moved sideways — usually the width of the closed lane.
Merging taper length
245ft
L = W × S² ÷ 60 = 12 × 35² ÷ 60 = 245.0 ft
MUTCD 11th Ed, Tables 6B-3 and 6B-4 — at least L
Plan view
8 devices at 35 ftLength is to scale; the lateral offset is exaggerated so the taper is legible.
All taper types at these conditions
MUTCD 11th Ed, Table 6B-3Merging taper
at least L
245 ft
Shifting taper
at least 0.5 L
125 ft
Shoulder taper
at least 0.33 L
85 ft
One-lane, two-way traffic taper
50 ft min, 100 ft max
50 ft
Downstream taper
50 ft min, 100 ft max
50 ft
Channelizing devices
MUTCD 11th Ed, Section 6K.01Maximum spacing in this taper
1 × 35 mph
35 ft
Devices required
One at each end, evenly spaced between
8