I emailed the city about this.

"Thank you for reaching out to the City of Burnaby. The MUP on the north side of 14th Avenue between 15th Street and 18th Street is designed to our Town Centre Standards and intended to be westbound uni-directional for cyclists. Eastbound cycling facilities will be provided in the future as part of the Southgate Development. Your feedback regarding the absence of accompanying signage and pavement markings has been documented for review."
