Before heading to the trails, ensure you're familiar with Massachusetts law regarding crossing pavement to reach a trail. Although riding on or crossing a road illegally or improperly is a major cause of ATV rider fatalities, it's important to understand the "90 Degree Angle Law" for safely crossing a busy street. According to mass.gov, an ATV stands for “All-terrain vehicle," which is a motorized recreational vehicle designed or modified to run on four low-pressure tires. Offroad-ed.com details the rules and steps for crossing roads:In Massachusetts, recreational vehicles are not allowed to be operated on:Any public way, unless the road is marked and approved for use by recreational vehicles, even for crossingA controlled-access highway, even for crossingWhen navigating an authorized public road in Massachusetts, operators:Must come to a complete stop prior to entering the roadway for crossing. ATVCourse specifies that all recreation vehicle operators in Massachusetts under 18 must complete an approved OHV Safety Course and carry the Massachusetts OHV Safety Certificate when riding on public lands.