APPROACH TAPER (SEE CONTRACT) ACCELERATION LANE LENGTH DECELERATION LANE LENGTH APPROACH TAPER (SEE CONTRACT) STOPPING POINT FOR WIDE LANE LINE OPTIONAL DOTTED 1/2 L 50' B LEFT-TURN LANE OPTIONAL DOTTED WHITE EDGE LINE EXTENSION LINE EXTENSION LINE

NO PASS STRIP ON APPROACH DOUBLE CENTERLINE (YELLOW) EQUAL TO APPROACH TAPER (NARROW PATTERN) INSIDE RADIUS OF OPTIONAL NOTES LEFT-TURNING VEHICLE (SEE CONTRACT) 1. The channelization shown on this plan assumes optimal roadway geometric design. The dimensions ...I ...I may vary to fit existing conditions. See Contract. w 0 0 LEFT-TURN CHANNELIZATION 2. The channelization shown on this plan is for a two-lane highway. The channelization plan may be used :::i on four-lane undivided highways with the appropriate considerations. z TEE INTERSECTION a:: WITH ACCELERATION LANE w 3. Centerline striping on the approach to raised channelization shall be No Pass in accordance with u. MUTCD figure 3B-15. Centerline striping on the departure from raised channelization shall be determined by an engineering study. 4. Centerline striping on the approach to and departure from painted channelization shall be determined by an engineering study. 5. Centerline striping on four-lane undivided highways shall be a double centerline. 6. The two Type 2L (SL) Traffic Arrows shown in the left-turn storage lane are optional. Arrows may be added for longer storage lanes or deleted for shorter storage lanes. See Contract Plans. STOPPING POINT FOR DOUBLE CENTERLINE (YELLOW) LEFT-TURN LANE LEGEND APPROACH TAPER (SEE CONTRACT) (NARROW PATTERN) 100' OPTIONAL (SEE CONTRACT) (OR PAINTED MEDIAN IF LEFT L = Lane width. See Contract 50' B TURNS ARE PROHIBITED) WHITE EDGE LINE ...I ...I LT = Left-Turn lane width. See Contract WIDE LANE LINE ~ Type 2L (SL) Traffic Arrow ~ Type 6R (SR) Traffic Arrow

WHITE EDGE LINE OPTIONAL DOTTED ...I EXTENSION LINE DOUBLE CENTERLINE (YELLOW) CENTERLINE STRIPE CENTERLINE STRIPE INSIDE RADIUS OF (NARROW PATTERN) (SEE NOTES) (SEE NOTES) LEFT-TURNING VEHICLE APPROACH TAPER (SEE CONTRACT) VARIES - SEE CONTRACT PLANS

LEFT-TURN CHANNELIZATION TEE INTERSECTION THIS DIMENSION IS BASED ON A 12' TURN LANE WIDTH POSTED DIMENSION SPEED B VARIES 47.5' VARIES 60MPH 60' (SEE (SEE CONTRACT) CONTRACT) WIDE LANE 55MPH 55' ,,;? ,. Walsh, Brian LINE V ~ t {/Jv-<_// / Sep 23 2020 I :S7 PM 50MPH 50' LEFT-TURN CHANNELIZATION 45MPH 45' TEE INTERSECTION AND 40MPH 40' BACK-TO-BACK TURN LANES 35MPH 35' STANDARD PLAN M-3.30-04 OPTIONAL DOTTED 30MPH 30' SHEET 1 OF 1 SHEET EXTENSION LINE DOUBLE CENTER­ (BOTH DIRECTIONS) 25MPH 25' APPROVED FOR PUBLICATION LINE (YELLOW) (EXI (NARROW PATTERN) 20MPH 20'   ... STATE DESIGN ENGINEER LEFT-TURN CHANNELIZATION VI Washington State Department of Transportation BACK-TO-BACK LEFT-TURN LANES