Blasting Zone
Signing for a blasting operation adjacent to the roadway.
MUTCD Figure 6P-2
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.
This typical application does not have a generator yet, so it cannot be opened in the builder. The computed geometry below still applies.
Computed for your conditions
MUTCD 11th Edshoulder taper
at least 0.33 L
85 ft
Base L
Table 6B-4
245 ft
Device spacing in taper
1 × speed, Section 6K.01
35 ft
Device spacing on tangent
2 × speed, Section 6K.01
70 ft
Advance warning area
Table 6B-1
300 ft
Longitudinal buffer
Table 6B-2
250 ft
Total zone length
935 ft
Related tools
TA-1 · Work Beyond the Shoulder
Work entirely off the roadway, behind the shoulder. Advance warning only, no lane closure.
TA-3 · Work on the Shoulders
Shoulder closed with a shoulder taper at 0.33 L. Travel lanes stay open.
TA-4 · Short-Duration or Mobile Operation on a Shoulder
Mobile shoulder work using vehicle-mounted warning devices.