Bright line rule - sustany/dvg GitHub Wiki

A bright-line rule is an objective rule that resolves legal questions in a straightforward, predictable manner. Because bright-line rules determine outcome entirely based on objective factors, they best allow parties to conduct their affairs in ways that won�t result in lawsuits at the cost of a lack of flexibility when dealing with individual nuances. This lack of flexibility can lead to what many consider inequitable outcomes.�

For example, a bright-line rule in the field of auto accidents would state �In a car crash, the party whose car is damaged in the front is responsible for the accident.� Under this rule, parties who find themselves in an accident know immediately if they can recover for the damage against the other party�s insurance. Nonetheless, if the accident occurred because one party backed into the other, this bright-line rule will not accurately assign legal responsibility to the party who caused the accident.�

The primary alternative to bright-line rules are balancing tests. Balancing tests allow the court to take more factors into account than bright-line rules, but outcomes are less consistent due to the subjective nature of these additional factors.�

See, e.g. Montejo v. Louisiana, 129 S.Ct. 2079 (2009).