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R 1

DESIGN NOTES

DESIGN RUNOFF LENGTHS ( L )

RARE BASED ON MINIMUM RADII, SUPERELEVATION, SPEED AND NUMBER OF LANES ROTATED.

SEE STANDARD DRAWING RD11-SE-1 FOR EQUATIONS, LEGEND AND GENERAL NOTES. TABLES1

SUPERELEVATION OF 3 PERCENT OR GREATER.

SPIRALS ARE RECOMMENDED FOR DESIGN SPEED OF 50 MPH OR GREATER AND DESIGN 2

01-01-2019 RD11-LR-2

RUNOFF

LENGTHS ( L )

FOR

RURAL HIGHWAYS

MINIMUM

DEPARTMENT OF TRANSPORTATION

STATE OF TENNESSEE

DRAWING

STANDARD

LLP

LENGTH AND TOTAL TRANSITION LENGTH.

SEE STANDARD DRAWING RD11-SE-1 FOR EQUATIONS TO CALCULATE TANGENT RUNOUT

TABLE VALUES ARE FOR MINIMUM RADIUS OF CURVE AND SUPERELEVATION RUNOFF LENGTH. 3