Report 30413-13469

Date

Dec 2025

Manufacturer

May Mobility

Vehicle

2023 TOYOTA Sienna

Location

Arlington, TX

Speed

4 mph

Engagement

Verified Engaged · ADS

Report narrative

What was reported

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.

Crash context

Conditions and outcome

Injury severity alleged

No Injured Reported

Crash with

Passenger Car

Subject movement

Making Right Turn

Roadway

Intersection

Weather

Clear

Vehicles towed

No Subject Vehicle, No Crash Partner

Air bags

No Subject Vehicle, No Crash Partner

SGO metadata

Report details

Report type

Monthly

Report version

1

Submission date

JAN-2026

Incident time

19:37

Operating entity

May Mobility Inc

Automation feature

v31.0.2

Driver / operator type

In-Vehicle (Commercial / Test)

Within ODD

Yes

Investigating agency

N/A

Same vehicle ID

2f0ca3019035ccc

Same incident ID

c8e72f1dc00071e