Each position used for servicing customers shall be provided with a customer waiting lane sufficient to accommodate the use. The actual number of vehicles to be accommodated by the waiting lane must be substantiated by a report from a professional traffic engineer, based on observations of other similar facilities owned by the applicant or operated by other parties in a similar fashion. Any report regarding activity for similar types of uses shall specify the type of location observed, e.g. highway, downtown, etc. The stacking lanes are not to be less than 10 feet in width and must provide 23 feet of length per vehicle.