Public Transit

Policies


Public transit management system (PTMS)


The Iowa DOT prioritizes revenue transit vehicle replacement and rehabilitation/remanufactured projects based upon PTMS Vehicle Score, which is calculated using the age and mileage of existing revenue transit vehicles compared to the PTMS useful life standards for the specific vehicle type.

 

Formulas

  • Accumulated mileage minus PTMS Mileage Threshold divided by 3,500 equals mileage score
  • Actual months owned minus PTMS Age Threshold (Months) equals age score
  • Mileage score plus age score equals PTMS Vehicle Score.

 

PTMS Mileage/Age Thresholds

 
Vehicle type Threshold
Sedans
Station wagon
Std. Vans/Non-ADA Minivans
Conversion & ADA Minivans
4 yrs. (48 mos.)/100,000 miles
LD buses 4 yrs. (48 mos.)/120,000 miles
MD buses 7 yrs. (84 mos.)/200,000 miles
HD buses < 35' 10 yrs. (120 mos.)/300,000 miles
HD buses 35' or more 12 yrs. (144 mos.)/350,000 miles

Prior to selection for replacement/rehabilitation, vehicles must also meet the federal useful life standard.

 

Federal Useful Life Standards

 
Vehicle type Threshold
Sedans
Station wagon
Std. Vans/Non-ADA Minivans
Conversion & ADA Minivans
4 yrs. (48 mos.)/100,000 miles
LD buses 5 yrs. (60 mos.)/150,000 miles
MD buses 7 yrs. (84 mos.)/200,000 miles
HD buses < 35' 10 yrs. (120 mos.)/350,000 miles
HD buses 35' or more 12 yrs. (144 mos.)/500,000 miles


 

Useful Life Standard for Public Transit Infrastructure Grant-Funded Projects


Additional Policies


Counting Only Open-to-the-Public Services for STA Formula
The Office of Public Transit only uses statistics from open-to-the-public services to calculate state transit assistance allocations.

Delinquent Year-End reports
Monthly State Transit Assistance (STA) formula payments will be withheld and/or contracts not executed for any system delinquent in submitting required reports. After reports are current, STA payments are released.

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