As the saying goes, two is better than one. While having a single-channel dash cam is more useful than having none, getting a rear dash cam can maximize your driving (and parking) protection, at a fraction of the cost and effort.
A dual-channel, or front and rear dash cam captures the view in front and behind your vehicle, all in one system. Many road accidents occur at low speeds and involve rear-end collisions, and a dash camera installed on your rear will add an extra level of security, and it may be the answer to resolving insurance disputes and claims. Rear cameras are especially useful in parking situations, ensuring full coverage around the vehicle, regardless of how you park.