When the center lane closes drivers will be forced to merge right or left. Prepare them for this with a long-lasting aluminum Center Lane Closed Ahead sign.
Standard: 01 In dropped lane situations, regulatory signs (see Section 2B.20) shall be used to inform road users that a through lane is becoming a mandatory turn lane. The W4-2, W9-1, and W9-2 signs shall not be used in dropped lane situations.
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