_Incident · Collision_

# ADS crash report in Arlington, TX involving a TOYOTA Sienna (NHTSA SGO 30413-13469)

Canonical ID: `8036f87e-9f66-4f47-9367-8e388134bcb5`

- **Occurred:** 2025-12-01
- **Kind:** `collision`
- **Status (derived):** active
- **Company:** [May Mobility](/companies/may-mobility.md) (id: `8f52c3ed-fb8c-4f25-8c75-c7c9f912776d`)

The May Mobility vehicle (Ego) approaches a turn with a trailing vehicle following closely behind. The May planner initially selects a trajectory it believes will safely complete the turn. However, as the Ego begins the turn, it re-evaluates the situation and detects a significant risk of striking the curb. At that point, the planner shifts focus from avoiding the curb entirely to minimizing the severity of a potential curb strike. To reduce speed before the expected contact, the Ego brakes at €“3.5 m/s²). Because the trailing vehicle is following so closely, this deceleration makes a rear-end collision likely. The Ego predicts a potential rear-end collision and elects to reduce brake force to lessen the impact severity. Moments later, the trailing vehicle strikes the rear driver-side bumper of the Ego and then drives away. Future improvements are underway to give the planner a policy option to steer away from curbs. This new capability will help the vehicle avoid situations where braking becomes the only remaining way to manage close curb proximity.

## Sources (1)

1. https://www.nhtsa.gov/laws-regulations/standing-general-order-crash-reporting#report-30413-13469

## Common questions

### What happened in ADS crash report in Arlington, TX involving a TOYOTA Sienna (NHTSA SGO 30413-13469)?

The May Mobility vehicle (Ego) approaches a turn with a trailing vehicle following closely behind. The May planner initially selects a trajectory it believes will safely complete the turn. However, as the Ego begins the turn, it re-evaluates the situation and detects a significant risk of striking the curb. At that point, the planner shifts focus from avoiding the curb entirely to minimizing the severity of a potential curb strike. To reduce speed before the expected contact, the Ego brakes at €“3.5 m/s²). Because the trailing vehicle is following so closely, this deceleration makes a rear-end collision likely. The Ego predicts a potential rear-end collision and elects to reduce brake force to lessen the impact severity. Moments later, the trailing vehicle strikes the rear driver-side bumper of the Ego and then drives away. Future improvements are underway to give the planner a policy option to steer away from curbs. This new capability will help the vehicle avoid situations where braking becomes the only remaining way to manage close curb proximity.

### When did this incident occur?

The incident is recorded as occurring on December 1, 2025 on the DEPLOY registry. The date reflects the underlying real-world event, not the registry record's creation date.

### Who was involved in ADS crash report in Arlington, TX involving a TOYOTA Sienna (NHTSA SGO 30413-13469)?

The incident is recorded as involving May Mobility on the DEPLOY registry. No specific robot model is linked to this incident in the registry.

### Has anyone responded to ADS crash report in Arlington, TX involving a TOYOTA Sienna (NHTSA SGO 30413-13469)?

No responses to this incident are recorded on the DEPLOY registry. Operators, manufacturers, or affected parties can submit responses to the editorial team; absence is not a guarantee no response was issued.

### What is the current status of ADS crash report in Arlington, TX involving a TOYOTA Sienna (NHTSA SGO 30413-13469)?

This incident is an active record on the DEPLOY registry; no retraction or correction has been issued.


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