In order to reduce traffic congestion and raise revenue for the city, the mayor plans to implement a charge of $10 per day for driving in the downtown area.
Evidence
In order to reduce traffic congestion and raise revenue for the city, the mayor plans to implement a charge of $10 per day for driving in the downtown area.
Payment of this charge will be enforced using a highly sophisticated system that employs digital cameras and computerized automobile registration.
This system will not be ready until the BENY → ~S end of the next year.
Without this system, however, mass ~S → E evasion of the charge will result.
Conclusion
When the mayor's plan is first PI → E implemented, payment of the charge will not be effectively enforced
Evaluate
The argument assumes that the plan PI → BENY will be implemented before the end of next year.