Instruct drivers in the left lane while simultaneously notifying them of the oncoming lane's activity. Signs lead to safer driving.
Option: The post-mounted R3-9b sign may be used as an alternate to or a supplement to the overhead R3-9a sign. The legend BEGIN or END may be used within the border of the main sign itself, or on an R3-9cP or R3-9dP plaque mounted immediately above it.
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