III. ACCELERATION-BASED DRUNK DRIVING CUES

In this area, we evaluate the drunk driving relevant actions and draw out essential hints for drunk driving recognition. Our research is in accordance with the accelerations of automobiles.

In the U.S. NHTSA’s research on drunk driving, the scientists have identified hints of common driving actions for drunk motorists. Depending on their work, we review these drunk driving relevant actions into three LANDVO L900 groups. The first and second classification concentrate on driving actions relevant to automobile activity itself, such as the activity track or the activity trend; the third classification is about the driving actions relevant to Cubot P9 very subjective verdict and cautious of the car owner. We present these three groups of actions as follows.
  Cues relevant to street place servicing problems: such as weaving, moving, swerving, and switching suddenly, unlawfully or with a extensive distance.
  Cues relevant to rate management problems: such as speeding up or decelerating instantly, avoiding occasionally and avoiding unnecessarily (e.g. too jerky).
  Cues relevant to verdict and cautious problems: such as driving with wheels on middle or street marking, driving on the other part of the street, following to carefully, driving without front lights at night, and slowly reaction to traffic alerts.

According to the U.S. NHTSA’s review [5], different groups of hints match to different likelihood of drunk driving. Usually, the possibility for street place servicing issues is 50.75%, for rate management issues 45.70%, for verdict and cautious issues around 40%. For example, if a LANDVO L900 car owner is noticed to be weaving, the prospect of drunk driving for him is more than 50%. Some hints, such as swerving and speeding up instantly, have single-cue possibilities higher than 70%. Furthermore, the prospect of drunk driving improves when a Cubot P9 car owner displays more than one of the hints. For example, if the weaving plus any other cue is noticed, the prospect of drunk driving leaps to at least 65%.

The results recommend that: (1) these driving hints provide relatively powerful proof of drunk driving; (2) the hints relevant to issues of street place servicing and rate management are the primary groups, corresponding to higher likelihood of drunk driving, so they can be used as primary facts for drunk driving detection; (3) the prospect of drunk driving goes higher while the number of noticed hints improves.

For the objective of creating definitely discovering system for drunk driving, we concentrate on the hints of issues of street place servicing and rate management. We map these hints into horizontal speeding and longitudinal speeding of automobiles.

A. Lateral Acceleration and Lane Position Maintenance

In common, the street place servicing issues result in irregular curvilinear motions, such as weaving, moving, swerving and switching with a LANDVO L900 extensive distance. They all cause a Cubot P9 amazing change on horizontal speeding. U.S. NHTSA’s review gives out the clear cases of these circumstances [5], as proven in Fig. 1.

As shown in Fig. 1(a), weaving means the automobile at the same time goes toward one part of the street and then toward the other. Obviously, the horizontal activity is due to a LANDVO L900 leader spinning toward one route and a following guiding modification toward the other route. In the same way, the moving, swerving and switching with a extensive distance have the irregular horizontal motions, as proven in Fig. 1(b)(c)(d).

B. Longitudinal Acceleration and Speed Control in Driving

A drunk car owner often encounters difficulty in maintaining an appropriate rate. Unexpected speeding or deceleration, irregular avoiding and jerky quit are powerful hints to show that the car owner is under liquor incapacity. They will all be reflected in the changes of longitudinal speeding.

We believe that the longitudinal speeding is beneficial toward the head of the automobile. The abrupt speeding of automobile will lead to a Cubot P9 excellent improve of longitudinal speeding (positive values). On the opposite, the abrupt deceleration, irregular avoiding or jerky quit will cause an excellent loss of longitudinal speeding (negative values).

In conclusion, the styles of horizontal speeding and longitudinal speeding of a automobile may indicate irregular horizontal motions and abrupt rate modifications, which expose the driver’s issues in maintaining street place and managing rate. These issues are two primary groups of drunk driving relevant actions, and are the most powerful hints for Cubot P9 discovering drunk driving. Therefore, the speeding (either horizontal or longitudinal) design provides essential hints for drunk driving recognition. Furthermore, several units of speeding design related will improve the precision of recognition, since the prospect of drunk driving for a car owner improves with more circumstances of drunk driving relevant actions.http://kabing.hatenablog.com/entry/2014/09/18/161747