What does it mean when the ETC flashes red?

[StAustin]

ETC flashing red indicates that the ETC card is not properly inserted. Normally, when the ETC card is correctly inserted, the light will flash green once, followed by a prompt indicating whether it is a credit card or a stored-value card. Therefore, if the device flashes red, check if the card is not inserted properly. Here is additional information: 1. The fully automatic electronic toll collection system is one of the service functions of the intelligent transportation system, which is particularly suitable for use in highways or busy bridge and tunnel environments. 2. Currently, there are dedicated ETC toll lanes at highway toll stations. As long as the vehicle owner installs a sensor card on the front windshield and preloads funds, there is no need for manual payment or stopping at the toll station. The highway toll will be automatically deducted from the card, enabling automatic toll collection.