A. The driver of any vehicle or combination of vehicles for which a variance permit has been issued commits the offense of failure to carry and display a variance permit if the driver does not:
1. Have the variance permit in immediate possession at all times when driving the vehicle or combination of vehicles upon a public highway or street; and
2. Display the variance permit upon demand of any police officer, department or county weighmaster, judicial officer, or the City Traffic Engineer.
B. Later producing a variance permit issued prior to and valid at the time of an offense by authority of this section is not a defense for a charge under this Section.