Traffic Signs and Torque Meters
Describe and Explain the Use and Usefulness of the Torque Meter
The typical sample figures illustrate types of acceleration and deceleration tracks designed to assess torque. This is useful in principle as vehicles turn left from various points. This analysis sits, in general, in the middle of the track and enters other tracks.
- LC is the cargo of one transition zone (AB = AB’ on the figure), or velocity, thus the capacity.
- LD is the length of the acceleration, and assumes that the end of the area (BB’), the vehicle using this speed change diminishes until a fraction.
- LE is to be determined by the length of the row of waiting vehicles.
- LT = LC + LD + LE
Describe and Explain the Use and Usefulness of the Torque Meter
In other cases, the problems relate to the provisions in a “S” curve from A to C (C’) measurements to two counters going circular with radii R1 and R2, which are tangent at a point B (B’). The development of each circular arc displacement generates E1 and E2 respectively, corresponding to the total width. The longitudinal view of each arch projected on the straight axle is L1 and L2, so that L, which is the sum, represents the length along which the modification occurs. These magnitudes are schematically shown in the following figure:
Explain the Use in Traffic
The traffic can accelerate, which tends to track and turn left or right, operating at a speed of 70 km/hr. Different speeds and high percentages of inclination are possible.
Indicate and Describe the Classification of Signals
a) Regulatory Signals:
They are intended to notify users of the priorities in their use, such as bans, restrictions, obligations, and authorizations. Their transgression constitutes an infringement of national transit standards.
b) Hazard Warning Signals:
Their purpose is to warn users of the existence and nature of risks and/or unexpected situations present in the area, either permanently or temporarily. These signals are also often referred to as preventative signals.
c) Informative Signals:
They have the purpose to guide users and give them the necessary information to enable them to reach their destinations in the safest, simplest, and most direct way possible. They also inform about distances to cities and towns, mileage of routes, street names, places of interest, and customer services, among others.
Basic Features of the Signals
Message
Form and Color
The looks that characterize each signal make it easier to be recognized and understood by users. In general terms, vertical signals have the following forms and colors:
- Regulatory Signals: Usually circular, it is acceptable to place the signal at a straight angle when there is an additional legend. Exceptions are the YIELD (RPI-1), STOP (RPI-2), and permitted parking (RA-1) signs. Their colors are white, red, black, and exceptionally blue, green, and gray.
- Hazard Warning Signals: Have the form of a yellow square, which is placed with its diagonals vertical; the symbol and legend are black. The St. Andrew’s Cross (PI-2) is an exception to the rule.
- Informative Signals: Are rectangular, its longest side can be placed both horizontally and vertically. An exception are the signals that indicate route numbering. Their background colors are blue, green, and exceptionally brown for tourist signals.
Size
Retroreflection
The signals will be visible at any time of day and under any weather condition. Therefore, suitable materials are used and are subject to procedures to ensure its retroreflection. This property allows them to be more visible at night when illuminated by vehicle lights, since a significant portion of the light is reflected back toward the light source.
Identify and Describe the Characteristics of Priority Signals
Form and Color
Most regulatory signals have a circular shape. These are placed at a straight angle when displaying a legend, which should be clear and concise. Exceptions are the YIELD (RPI-1), STOP (RPI-2), and permitted parking (RA-1) signs.
Its background color is white and red, or blue exceptionally. Its border is red and green, or black exceptionally. Its symbol and legend are black, white, and gray exceptionally.
Message
In addition to communicating prohibitions or restrictions through symbols, it may be necessary to complement the message with a legend. This is the case for prohibitions or restrictions for some specific times. When this happens, the symbol should be complemented with a legend indicating the time and/or days in which the regulation is in effect, indicating, if possible, the hours or if it is open 24 hours. For example, it is preferable “9 PM to 6 AM” instead of “9:30 PM to 6:15 AM”.
Location
Regulatory signals should be put in place where required to establish the regulation. If traffic conditions make it necessary, they may be repeated on the left side to ensure their observation.