9534496 B1 abstract in one example we describe a method and system for tunnel air ventilation which is very practical economical and easy to install or implement the repair and maintenance is safer and less expensive the overall cost of installation and repair is lower the system is more stable and thus safer for the vehicles and people it is not damaged by sand and it does not cause damage to vehicles by sand so the risk is minimized the overall value for the government and society is very high the efficiency and low down time translates to a cleaner air in the tunnel which is a major health issue for people which causes sickness and even death for pollution and toxicity or by fatal accidents in the tunnel due to intoxication of the drivers or dizziness different variations are also discussed and shown application_number US 201514825993 A description the current and above mentioned flaws cost operational inefficiency and archaic approach to the tunnel design have motivated the inventor here to come up with a new way to design an upcoming tunnel ventilation system as a result we have a new way of approach to tunnel ventilation system that is more cost effective with considerably fewer working parts easier repairs as opposed to difficulty in operation and changing parts and heavy reliance on bad and old tunnel design the system and method is fundamentally based upon continuous u201c partial positive pressure u201d p p p which applies to the total volume of the tunnel in.