Oregon Department of Transportation, Highway Division
Yield Sign Placement for Transit Buses
The yield sign shall be located on the rear of the bus, to the left of center and in the lower two-thirds. Preferably the yield sign would be located next to or near the left turn indicator lamp. If receiving or discharging passengers to the left side of the bus and entering traffic lanes to the right, the sign shall also be placed right of center in the lower two thirds, preferably next to or near the right turn indicator lamp. A transit agency may place a single sign near the center of the rear of the bus, in the lower two thirds of the bus, which would signal for right and left merges, instead of having two separate signs.