Subchapter E. STOPWATCHES
Sec.
105.71. Approved stopwatches.
105.72. Equipment approval procedure.
105.73. Appointment of stopwatch testing stations.
105.74. Required equipment.
105.75. Manner of testing.
105.76. [Reserved].§ 105.71. Approved stopwatches.
The following types of stopwatches are approved by the Department for use in timing the rate of speed of vehicles:
(1) Mechanical stopwatches. A mechanical stopwatch shall comply with the following standards:
(i) The face shall be fully graduated, with minimum graduations of 1/5 second.
(ii) The stopwatch shall be accurate to the equivalent of plus or minus 15 seconds per 24-hour period.
(2) Electronic stopwatches. An electronic stopwatch shall comply with the following standards:
(i) The common crystal frequency shall be 32,768 Hz with a measured frequency within plus or minus 3 Hz, or approximately .01% of the standard frequency.
(ii) The stopwatch shall be accurate to the equivalent of plus or minus 9 seconds per 24-hour period.
Source The provisions of this § 105.71 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2311; amended October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051. Immediately preceding text appears at serial pages (111322) to (111323).
Cross References This section cited in 67 Pa. Code § 105.72 (relating to equipment approval procedure); 67 Pa. Code § 105.94 (relating to required equipment); and 67 Pa. Code § 105a.4 (relating to system and speed timing device use and certification).
§ 105.72. Equipment approval procedure.
To obtain approval of a type of stopwatch, a laboratory report indicating that the type of stopwatch has been tested in accordance with this subchapter and meets the standards in § 105.71 (relating to approved stopwatches) shall be submitted to the Bureau of Motor Vehicles, Vehicle Control Division, Post Office Box 8697, Harrisburg, Pennsylvania 17105.
Source The provisions of this § 105.72 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2311; amended October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051; amended February 17, 1989, effective February 18, 1989, 19 Pa.B. 640. Immediately preceding text appears at serial page (122766).
Cross References This section cited in 67 Pa. Code § 105a.4 (relating to system and speed timing device use and certification).
§ 105.73. Appointment of stopwatch testing stations.
A facility capable of testing the accuracy of a stopwatch and capable of making adjustments to assure the accuracy of a stopwatch may, upon application to the Bureau, be appointed as a stopwatch testing station.
Source The provisions of this § 105.73 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2311; amended October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051. Immediately preceding text appears at serial page (111323).
Cross References This section cited in 67 Pa. Code § 105a.4 (relating to system and speed timing device use and certification).
§ 105.74. Required equipment.
(a) Stopwatch testing stations appointed to test mechanical stopwatches shall have at least one ‘‘Watch Master,’’ vibrograf MU 700, or similar device.
(b) Stopwatch testing stations appointed to test electronic stopwatches shall have at least one digital counter of at least 1 part in 106 accuracy or vibrograf models MU700 or M80. The counter accuracy shall be traceable to the National Bureau of Standards.
Source The provisions of this § 105.74 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2311; amended October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051. Immediately preceding text appears at serial page (111323).
Cross References This section cited in 67 Pa. Code § 105a.4 (relating to system and speed timing device use and certification).
§ 105.75. Manner of testing.
(a) Test.
(1) A mechanical stopwatch shall be tested with a ‘‘Watch Master’’ or similar device.
(2) An electronic stopwatch shall be tested by measuring the frequency of crystal between the common terminal at the base of the battery and the test point or output terminal on the crystal, with a digital counter of at least 1 part in 106 accuracy. The counter accuracy shall be traceable to the National Bureau of Standards. Note: Plus or minus 1 Hz is plus or minus 3 seconds in 24 hours; plus or minus 2 Hz is plus or minus 6 seconds in 24 hours; plus or minus 3 Hz is plus or minus 9 seconds in 24 hours.
(b) Forms. Upon determining that a stopwatch is accurate, a stopwatch testing station shall issue a certificate of accuracy on a form provided by the Department. The certificate shall contain the date of the test and the signature of the person who conducted the test. The certificate shall be kept on file for at least 2 years. A duplicate copy, executed and signed in the same manner as the original, has the same force and effect as the original.
Source The provisions of this § 105.75 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2311; amended October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051; amended February 17, 1989, effective February 18, 1989, 19 Pa.B. 640. Immediately preceding text appears at serial page (122767).
Cross References This section cited in 67 Pa. Code § 105a.4 (relating to system and speed timing device use and certification).
§ 105.76. [Reserved].
Source The provisions of this § 105.76 adopted October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; amended January 12, 1979, effective January 13, 1979, 9 Pa.B. 172; amended July 20, 1979, effective July 21, 1979, 9 Pa.B. 2401; amended September 28, 1979, effective September 29, 1979, 9 Pa.B. 3324; amended May 16, 1980, effective May 17, 1980, 10 Pa.B. 1980; amended May 30, 1980, effective May 31, 1980, 10 Pa.B. 2162; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended January 15, 1982, effective January 16, 1982, 12 Pa.B. 299; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; amended December 30, 1983, effective December 31, 1983, 13 Pa.B. 4021; reserved March 30, 1984, effective March 31, 1984, 14 Pa.B. 1089. Immediately preceding text appears at serial pages (85977) to (85978), (86615) to (86616) and (85979) to (85983).
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