WELCOME

Interactive discussion on safety issues involving bus carriers trying to do their job….. SAFELY.

Speakers: John Fabian, Chief Investigator

NYSDOT and PTSB

And Scott Weinstein, Superintendant

MTA-NYCT Office of Safety and Training

SAFETY ISSUES

• Wheel separation accidents

• Collecting “Hard Facts”

• Reducing Bus / Pedestrian Conflicts

DISCLAIMER:• NYSDOT does not endorse any product

by any manufacturer.• The topic presented here is in the name of

safety and reduction of wheel separation incidents, bus collisions, and pedestrian accidents.

• The viewers are encouraged to review all available products and determine what is best for their individual situations.

WHEEL SEPARATIONWHEEL SEPARATION

INCIDENTSINCIDENTS

Problem: Roll Away Tires

• PTSB investigates several incidences of tire separation on a yearly bases.

• They have resulted in injuries and property damages. Single tire/wheel or dual wheel sets have tremendous energy due to weight and speed.

GOAL: ELIMINATE WHEEL DETACHMENTS

PLAN:

•Provide Bus Operators and Maintenance Personnel with an easy, visible inspection of the lug nuts to:

• determine they are secure• indentify brake or bearing issues

GOAL: ELIMINATE WHEEL DETACHMENTS

rear duals tire off.wmv

GOAL: ELIMINATE WHEEL DETACHMENTS

PROCESS:

Install a plastic arrow on all wheel lugs that point in a circular direction and is heat sensitive. Movement of the arrow indicates a loose lug. Blistering of the arrow indicates substantial heat.

GOAL: ELIMINATE WHEEL DETACHMENTS

RESULTS:

• Easily identifies loose lug nuts.

• Easily identifies “hot wheels”, caused by either bearing failure or brake drag.

Loose Wheel-Nut Indicator

Characteristics of the loose wheel indicators

• Comes in various lug nut sizes

• Comes in various colors with different temperature thresholds

• Easy to install

• Cost only a few dollars per wheel

250 Degrees

350 Degrees350 Degrees

425 Degrees425 Degrees

Goal: Learn from the facts

Plan:

Make use of technological advances to gather reliable facts to determine the true causes of incidents.

Goal: Learn from the facts

Process:

What is available today?

- Electronic control module (ECM)

- Video

Goal: Learn from the facts

Process:

What is an ECM ?

How does it work ?

What does it tell me?

How can I use it ?

Goal: Learn from the facts

Process:

What is it? The ECM is an electronic control module that collects data from the bus that can be used to determine:

-speed of the bus, rate of throttle, rate of braking, and timing of these events. VERY useful for accident investigations.

Goal: Learn from the facts

Process:

Where is it?

It is located on the block of Detroit Diesel engines on transit and coach buses.

< ECM