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 Austin
 Transportation Criteria Manual
 Section 5. DRIVEWAYS
 Appendix 5.3.0. DESIGN CRITERIA

  § 5.3.2. Criteria for Various Types of Driveway

Latest version.

  • Tables 5-1 through 5-4 represent criteria for the various driveway classes.

    TABLE 5-1
    TYPE I DRIVEWAY CRITERIA
    Min. Desirable Max.
    SINGLE FAMILY
    Width 12′ 18′ 25′
    Curb Return Radiusa 5′ 5′ 10′
    Throat Lengthb (Extended to property R.O.W. line-minimum)
    Spacing Between Drivewaysc (Limited to one driveway per property)
    DUPLEXES AND TOWNHOMES d
    Width 15′ 18′ 25′
    Curb Return Radiusa 5′ 8′ 10′
    Throat Length b (Extended to property R.O.W. line-minimum)
    Spacing Between Driveways 10′ - -
    b  Distance from street to first conflict point.
    c  Semicircular driveways acceptable with minimum spacing between driveway entrance and exit of 35 feet. (measured from inside edge to inside edge of driveway approach at the property line).
    d  When two (2) driveways are used (one (1) per unit/two (2) maximum), single family standards for width shall apply.
    Source: City of Austin, Department of Public Works and Transportation

     

    TABLE 5-2 TYPE II COMMERCIAL DRIVEWAY CRITERIA
    Driveway Type Roadway Type
    Local Street, Residential or Neighborhood Collector Commercial or Industrial Collector Primary Collector Minor Arterial Major Arterial, PRA, Hill Country Roadway
    Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
    ONE WAY
    Width 15 a 20 15 a 20 18 a 25 18 a 25 b 18 a 25 b
    Curb Return Radius 10 25 15 25 c 15 30 c 20 30 c 20 30 c
    Throat Length d - - 20 - 20 - 40 - 50 -
    Distance Between Entry and Exit Drive 50 - 50 - 50 - 75 - 75 -
    Driveway Spacing e 50 - 75 - 100 - 150 - 200 -
    Driveway Spacing on Hill Country Roadway - - - - - — - - 300 -
    TWO WAY UNDIVIDED
    Width 25 40 25 40 30 40 30 45 30 45
    Curb Return Radius 10 25 15 25 c 15 30 c 20 30 c 20 30 c
    Throuat Length d - - 20 - 20 - 40 - 50
    Driveway Spacing e 50 - 75 - 100 - 150 - 200 -
    Driveway Spacing on Hill Country Road - - - - - - - - 300 -
    Width (each side of median) f 20 24 g 20 24 g 20 24 g 20 30 g 20 30 g
    Curb Return Radius 15 25 c 15 25 c 15 25 c 20 30 c 20 30 c
    Throat Length d 20 - 20 - 20 - 40 - 50 -
    Median Width f 4 15 4 15 4 15 4 15 4 15
    Median Length 10 - 10 - 10 - 20 - 20 -
    Driveway Spacing e 50 - 75 - 100 - 150 - 200 -
    Driveway Spacing on Hill Country Roadway - - - - - - - - 300 -
    a   Greater width may be required for fire department emergency access.
    b   30-foot minimum width may be required on state highways.
    c   Radius may be increased to 40 feet at driveways serving large trucks.
    d   Distance from the edge of pavement to first conflict point.
    e   Special ordinance requirements apply on PRA and Hill Country IRoadways.
    f   On state highways, state standards may vary from City standards.
    g   When a divided driveway is the fourth leg of an intersection, a 36-foot width may be permitted to match the opposing street configuration