How to Fix Traffic Gridlock From Agents Never Yielding at Intersections

When traffic seizes up at a four-way and never clears, vehicles are entering junctions they cannot exit. Each blocks the other's path with no yielding logic. Make agents reserve their entire path through an intersection before committing. Here is the fix.

How to fix it

1. Reserve the full crossing path

Before entering an intersection, an agent must reserve every cell on its path through it. If any cell is reserved by another agent, it waits at the entrance instead of entering and blocking.

2. Release cells as you clear them

Free each reserved cell once the agent passes it so following traffic can claim it, keeping throughput high while still preventing two crossing flows from locking.

3. Add tie-break priority

Give intersections a deterministic priority order (e.g. by approach or arrival tick) so when several agents contend, one is chosen to go first, guaranteeing the junction always drains.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.