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| Content Provider | ACM Digital Library |
|---|---|
| Author | Nadan, Joseph S. |
| Abstract | The advent of low-cost ultrareliable integrated circuits has made feasible the design of a responsive electronic vehicular instrumentation system that results in significant improvement in the surveillance of highway internal performance factors; e.g. detection and apprehension of violations, location and identification of stolen and/or wanted vehicles, location and identification of disabled vehicles, etc., while reducing the cost. The responsive electronic vehicular instrumentation system (REVIS), shown in Figure 1, consists of a roadside transmitter-receiver-decoder and a vehicular transponder. This system may first be introduced in an evolutionary manner by substituting the transponder for toll schedule cards on turnpikes; a more revolutionary approach yielding improved system performance would be the legislated requirement of compulsory installation of the transponder package in all vehicles manufactured for use in the United States. The roadside transmitter-receiver-decoder continually broadcasts a low power querry code in its narrow capture range that enables the vehicular transponder to respond with a unique identification code; i.e. to uniquely encode 100 million vehicles would require 27 bits, i.e. 227 &equil; 134, 217, 728 which is greater than 100 million. The decoder then sequentially adds 10 bits to encode detector identification number and time of encounter. This information is then processed to determine whether the vehicle has violated a predetermined set of rules; any required action being initiated by the system. The following examples illustrate the system operation. |
| Starting Page | 225 |
| Ending Page | 231 |
| Page Count | 7 |
| File Format | |
| DOI | 10.1145/800294.811444 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1971-01-01 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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