The massive wreck in the Mission 200 NASCAR Xfinity Series race at Watkins Glen that ended with more than a dozen cars in a heap and a 45-minute red flag began long before the first piece of bodywork flew.

As Austin Hill and Michael McDowell raced out of the carousel, both drifted well outside the traditional racing line. Hill attempted to force a pass with minimal room, getting into McDowell’s left rear quarter-panel just as both cars skirted the edge of the pavement. The ensuing spin sent McDowell hard into the guardrail and triggered the field-filling crash.

The sequence has reignited an ongoing discussion in NASCAR circles: should road courses have formal track limits like those used in Formula 1, World Endurance Championship, and other international series? In those forms of racing, strict boundaries that are enforced by sensors, or painted white lines, penalize drivers for running beyond the defined edges of the circuit.

The idea is to keep competition within a safe zone, discourage risky maneuvers, and prevent drivers from exploiting curbs or runoff areas to gain an advantage.

Had such a rule been in place at Watkins Glen, it is possible that Hill and McDowell’s battle might have unfolded differently. By definition, the racing line would have been more constrained, leaving less room for the type of side-by-side crowding that led to the contact.

Whether that would have prevented the crash entirely is impossible to know, but some argue it would at least have reduced the likelihood of such a severe incident.

Proponents of adding track limits to NASCAR’s road courses point to safety as the primary benefit. Restricting cars to a set line minimizes situations where drivers dive beyond the pavement in desperate overtakes, only to return to the racing surface at awkward angles. It can also ensure a more level playing field, preventing those willing to push the boundaries from gaining unfair advantages over more disciplined competitors.

Skeptics argue that NASCAR’s road course racing has long embraced its looser boundaries, allowing drivers to improvise lines and use every inch of runoff in pursuit of speed.

Introducing strict limits could alter the sport’s character and lead to a flood of penalties, at least in the early stages of enforcement. The cost and complexity of implementing sensor systems at multiple venues is another potential hurdle.

Still, as the images of crumpled race cars and destroyed guardrails from Watkins Glen linger, the conversation is gaining momentum. For many, the Hill-McDowell crash is proof that even in NASCAR’s rough-and-tumble world, some boundaries—literal ones—might be worth considering.

This article first appeared on MotorRacing.com, a sister site to Speedcafe.com.

For more of the latest NASCAR news stories, visit MotorRacing.com