HYDROPLANING Telcom Insurance Group Monthly Loss Prevention Program.

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Presentation transcript:

HYDROPLANING Telcom Insurance Group Monthly Loss Prevention Program

Statistics Weather-related crashes are defined as those crashes that occur in adverse weather (i.e., rain, sleet, snow, and/or fog) or on slick pavement (i.e., wet pavement, snowy/slushy pavement, or icy pavement). In 2010, nearly 7,400 people are killed and over 673,000 people are injured in weather-related crashes each year. – Federal Highway Administration (FHWA)

Statistics 75% of weather-related crashes occur on wet pavement. We can further divide that group: 47% involved active rainfall; 15% involve snow or sleet; 13% involve icy pavement; 11% involve a mix (i.e. snowy and/or slushy pavement – Federal Highway Administration (FHWA)

Introduction Hydroplaning occurs when a layer of water builds up between your vehicles tires and the road surface causing a loss of traction and possible loss of control.

Introduction Your vehicles tires enable you to start, stop, change speed and turn your vehicle, but only if they can grip the road. Normally tires push away rain, snow and mud, but under some circumstances, a tire may encounter more water than it can brush aside.

Introduction When a tire can no longer move the water aside the water pressure in front of the wheel forces a wedge of water under the leading edge of the tire. This causes the tire to lift from the road surface. The tire then skates on a sheet of water with little, if any, direct road contact.

Introduction When your vehicles tires actually lift up off of the road, your vehicle loses traction and it becomes uncontrollable. Without your tire in proper contact with the road, your ability to steer, brake or accelerate is compromised.

Introduction Under extreme circumstances, most commonly excessive speed, it is possible to have multiple tires hydroplane. This condition could cause the vehicle to lose directional control and slide until it either collides with an obstacle, or slows enough that one or more tires contact the road again and friction is regained.

Factors that Contribute When you change speed or direction, your vehicle makes it happen through the tires contact with the road. Some conditions can affect your tires ability to grip the road: –Inadequate tread depth – the grooves on the tires channel water, snow and slush away so that the treads can grip. If the tire is balding (the grooves are too shallow or non-existent), then the tire can spin without effectively gripping the road.

Factors that Contribute –Speed – as your vehicles velocity increases, the tires can actually ride up on top of snow, ice, and water. As the wheels turn faster, they lose their ability to channel away water, snow or slush. Some extreme sports fanatics actually drive their motorbikes and quad-wheelers across the surfaces of small ponds by gaining enough speed and momentum before launching out onto the waters surface.

Factors that Contribute –Water depth – deeper sheets of water (caused by poor drainage or extra heavy downpours of rain) increase the likelihood of hydroplaning. Loss of traction can occur on merely wet roads, but all drivers should be extra careful when they encounter large sheets of standing water. –Under inflation – under inflated tires cant effectively push away water (and running on under inflated tires lowers your fuel economy, too!)

How to Spot Hydroplaning There are several possible signs that could signal that your vehicle is beginning to lose (or has lost) control: –If your drive wheels are hydroplaning, you might notice an increase in engine RPMs as the wheels spin on top of the water.

How to Spot Hydroplaning –When driving straight, you may feel a wiggle in the response of the steering mechanism, or you may feel that the steering is soft or loose. Dont try to swerve to see if youre hydroplaning – it could lead to a crash.

How to Spot Hydroplaning –If you dont see your tires tracks immediately behind you (in the mirror) it may be due to the tires not cutting through the water effectively. Typically, your tires will cut through the water, pushing it away and leaving tracks behind your vehicle. If you dont see tracks, you may want to slow down to see if that action produces a track. Any sideward motion (skidding, fishtailing, etc.) as you navigate curves may be a strong indicator that youre hydroplaning.

Recovering from Hydroplaning If you feel youre losing control, slow down by taking your foot off of the accelerator – do not rush to the brake pedal. –Remember, your vehicle is riding on top of the water – a sudden application of brakes could lock the wheels, contribute to a skid or general loss of control. –As the tires slow down, youll recover traction.

Recovering from Hydroplaning Dont make sudden moves with the steering wheel (if already under control) – if in a slide, allow the vehicle to slow down to get traction and make gradual moves instead of sharp, sudden movements. As your tires regain traction, youll reestablish control.

Avoiding Hydroplaning You can avoid hydroplaning with good maintenance practices, slowing down in extreme weather and by eliminating distractions while driving (allowing you to concentrate on the feel of the vehicle and its sounds).

Avoiding Hydroplaning Take your foot off of the accelerator and allow your vehicle to slow down gradually. If you immediately hit the brakes, you may simply lock your wheels and slide. If you have Antilock Brakes, follow the directions offered by the manufacturer for dealing with these systems and conditions.

Avoiding Hydroplaning Slow down before running across large puddles (bodies of standing water on the road surface). Slow down when dealing with extra heavy downpours of rain – the water may not be able to run off of the highway surface quickly enough and it may provide an ideal surface for hydroplaning.

Avoiding Hydroplaning Before you encounter hydroplaning conditions – make sure your vehicle is in top condition: check tire pressure; tread depth and condition; use the right tire design for your vehicle and type of driving.

Avoiding Hydroplaning Dont use cruise control when conditions are ideal for hydroplaning. You wouldnt want your vehicle thinking that it should speed up when the tires lose contact with the road surface (your speed may drop as you ride up on top of the water).

Summary Slow down during extreme weather and avoid standing water. Stay calm if your vehicle begins to hydroplane and ease your speed down to recover traction and control.

Summary Slow down on slippery roads & leave extra space between vehicles. Make sure your tires are properly inflated, have adequate tread depth and are the right type for your vehicle.

Were here to help! If you would like additional information regarding Highway Safety, please contact us at 6301 Ivy Lane, Suite 506 Greenbelt, MD Toll Free: Fax: