(Bloomberg) -- Twenty major automakers will announce a voluntarily agreement to equip cars and trucks with automatic emergency-braking systems designed to detect and prevent crashes without driver action, according to two people familiar with the matter.

The agreement, expected to be announced Thursday, will specify that almost all U.S. cars and trucks will include the technology by 2022, said two other people who have been briefed on the announcement.

The U.S. Transportation Department and the insurance industry have been in talks since last year on voluntary commitments that would cover most new models. Automatic emergency braking systems use radar or other sensors to detect an imminent crash and, if needed, engage the brakes to avoid or minimize the impact of a rear-end collision.

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