Is ETC universally compatible with all vehicles?

[AlejandroFitz]

ETC is not universally compatible with all vehicles; only vehicles that have registered for ETC can use it. ETC is designed for vehicles that frequently travel on highways, primarily to provide convenience for vehicle owners and save toll collection time. ETC operates on a nationwide network, meaning vehicles can use ETC for toll payments at any location. ETC is an electronic toll collection system that does not require vehicles to stop. ETC-dedicated lanes are reserved for vehicles equipped with ETC onboard units, utilizing electronic toll collection methods. The non-stop toll collection technology is suitable for use on highways or in congested bridge and tunnel environments. In traditional setups with lane isolation measures, the non-stop toll collection system is typically referred to as a single-lane non-stop toll collection system. In scenarios without lane isolation, the non-stop toll collection system operating in free-flow traffic is generally called a free-flow non-stop toll collection system.