What is bin driving mode?

What Does D3 Mean on an Automatic Car?

D3 is a specific mode that you can shift to in some automatic transmission cars (typically Honda) that is useful for driving down steep hills, driving in stop-and-go traffic, or driving on slippery roads.

What does D3 mean on an car?

Selecting D3 with the shift lever of an automatic car limits the transmission to only use the first three gears. This provides greater control of which gears your car uses, rather than letting the computer choose the gear.

Using D3 can be beneficial under certain driving conditions such as:

• 1. Selecting D3 uses engine braking for driving down steep hills. This can reduce wear on brakes and brake pads.
• 2. Selecting D3 in stop-and-go traffic will prevent the car from shifting into higher gears, which will consume less fuel.
• 3. D3 is recommended when towing a trailer on hilly roads.

You can check the owner’s manual for specific instructions on when to use D3 for your specific model.

Only some car models have a D3 selection available on their shift lever. In many modern cars, the car relies on the computer to determine the optimal gear.

• What does D3 mean on an car?
• What is the difference between D3 and D?
• How to shift to D3
• When not to use D3 while driving
• How does D3 affect maximum speed?
• How does D3 affect fuel efficiency?
• Cars with a D3 Selector

What is the difference between D3 and D?

When “D” is selected, the car automatically shifts into the optimal gear based on the current speed and acceleration.

In “D” mode, the car may even shift into higher gears to warm up the engine faster in cold weather.

When “D3” is selected, the car will automatically shift between the first three gears, but will not shift to a higher gear.

How to shift to D3

Typically, you will let your foot off the acceleration and move the shift lever to the D3 selection. Some cars have a button on the shift lever for D3 mode (an example of this is the 2009 Ridgeline).

Avoid pressing the acceleration pedal at the same time as shifting, as this could damage the transmission.

When not to use D3 while driving

Under normal driving conditions, it is usually best to use the “D” gear selection rather than D3.

D3 is not ideal for normal highway driving, as the engine will have a higher RPM at the lower gears and consume more fuel.

D3 should not be used when towing a trailer on normal road conditions, as this can cause an increase in transmission fluid temperature and cause overheating (source: 2009 Honda Ridgeline owner’s manual).

How does D3 affect maximum speed?

A car in D3 mode is not able to reach its top speed because it is limited to the first three gears.

For example, a Honda Civic EX has a maximum speed of 112 when D3 is selected.

How does D3 affect fuel efficiency?

Using D3 can have a negative effect on fuel efficiency since the car will be limited to using the first three gears and will not be able to shift to higher gears at high speeds.

Cars with a D3 Selector

The D3 selector is common on older Honda models. In newer models, the D3 mode has been replaced by “S” and “L”.

Some examples of cars that have a D3 selector are the:

• Honda Civic
• Honda Ridgeline
• Honda CR-V
• Honda Pilot

What is bin driving mode?

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• ETDs: Virginia Tech Electronic Theses and Dissertations
• Masters Theses
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Intelligent Cruise Control System Impact Analysis

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Дата

1998-08-06

Автор

Patterson, Angela K.

Metadata

Аннотации

Intelligent cruise control (ICC) has the potential to impact both roadway throughput and safety by assisting drivers in maintaining safe headways. This thesis explores this potential through comparisons of ICC to conventional cruise control (CCC) and manual driving. Accordingly, descriptions are given of both CCC and ICC systems. Furthermore, descriptions of ICC evaluation studies and car-following models are presented. The evaluation of ICC is conducted using data collected as part of the Field Operational Test (FOT) performed in Ann Arbor, Michigan. Two levels of analysis are presented in this thesis. The first level of analysis compares the usage of ICC to CCC from a macro level. This study demonstrated that ICC was used more along similar trips. In addition, it was shown that there was no difference in usage of the ON, SET, CANCEL and RESUME buttons. ICC resulted in a higher usage of the ACCEL button and a lower usage of the COAST button compared to CCC. Furthermore, the number of brake interventions while ICC was engaged was higher than CCC. Lastly, the macro-level analysis indicated that there was no difference in the number of near encounters for ICC and CCC. The second analysis makes comparisons at a micro level. The most probable speed, acceleration and headway for each driving mode as well as the probability of using cruise control (based on speed) were determined. The probability of ICC use exceeded CCC use for every freeway speed bin and all but two high-speed arterial speed bins. Finally, a car-following behavior comparison was performed. Manual driving resulted in larger headway values for speeds less than 80 km/h. The ICC speed-headway curve was similar to the CCC speed-headway curve created from high-speed arterial data. The mean headway-speed charts, however, indicated that ICC was more similar to manual driving. Exploration into the specific differences is needed in order to determine the impact of ICC on system safety.

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• Masters Theses [21822]

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