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Transition from hard-cased electronic toll transponders to newer and cheaper transponder sticker technology can save agencies $10.00 to $14.00 per unit installed.

A standardized regulatory impact assessment conducted by Caltrans.

Date Posted


Although toll agencies were initially expected to incur additional costs to purchase 6C transponders and related equipment, retrofit ETC systems, and dispose of old equipment, these costs were found to be minimal when compared to the overall savings and benefits of using the new system, and realized savings from the transition were anticipated within one year.

In California, toll agencies that transitioned to the 6C protocol within the first year the regulation was implemented (2016) were estimated to save $10.00 to $14.00 per unit. Consumers using the toll facilities were not expected to be impacted by the new protocol because neither costs nor savings would be passed onto individuals or households (toll payers or subscribers of the toll facilities).

After Caltrans' Economic Analysis Branch gathered, analyzed, and estimated the direct costs and savings to toll agencies, the California Department of Finance (DOF) determined that the proposed change resulted in over $50 million worth of impacts during a 12-month period during implementation. It also determined that additional economic analysis was required to assess impacts during an implementation timeframe from 2019 through 2023 and one year after.

The baseline scenario for the economic analysis is highlighted below:

Direct Cost Estimation Inputs (2015$) – Proposed 6C Regulation

6C Proposed Regulation
T21 Baseline
  Period No. of Units Per Year (Millions) Unit Price Period No. of Units Per Year (Million) Unit Price
Equipment Purchases System Retrofit 2017-18 Statewide Upgrades $2.4 million - - -
Transponder Purchases (Switchable) 2019-24 0.490 - 1.7 $10.00 2019-24 0.440 - 0.730 $20.00
Transponder Purchases (Non-switchable) 2018-24 0.960 - 3.3 $1.20 2019-24 0.850 - 1.4 $15.00
O&M Costs Transponder Disposal 2018-24 0 - 3.5 $0.28 2019-24 0.52 $0.28
Transponder Shipping 2018-24 1.5 - 4.9 T21: $3.00
6C switchable: $3.00
6C non- switchable: $1.00
2019-24 1.3 - 2.2 $3.00
Goal Areas
Results Type
Deployment Locations