New Form Of Transport Research Articles

Emerging Developments in Intercity Transportation

TRANSPORTATION makes cities possible. Cities are not self-sufficient; they exist only because of the specialized functions that they perform for their surrounding areas or hinterlands. All these functions depend upon transportation, which enables cities to become the foci of their contributory or service areas. As new forms of transportation come into use and as the speed and carrying capacity of existing forms increase, the size of thie contributory areas of cities 'and the magnitude and complexity of the cities' relations to their areas become greater. An examination of the present state of development and the future prospects of each form of transportation is of vital significance in an evaluation of cities. Table 1 indicates the relative volume of intercity freight and passenger traffic by various types of carriers in the United States in 1941, the last normal prewar year.

Noise Reduction in Cabin Airplanes

Abstract Any new form of transportation generally brings some new sort of nuisance to the persons using it. Air transportation, the newest and fastest form of travel, is no exception, and the chief deterrent to air travel is the noise to which the passengers are subjected. As it is impossible to discuss any physical phenomena without having measuring units and methods of securing them, a description of the decibel scale as well as a discussion of the commonly used noisemeter is given, including a description of a most inexpensive, simple, and yet very reliable tuning-fork method.