agreed with all above. Not required to show the reading, further the reading does not even have to be "locked" and therefore will not be displayed
if the reading is there, the next words would be is "it's not my vehicle".
Further it is unsafe for drivers to get out of their vehicle on any highway. Police do this day in an out, are used to traffic, cognizant of the variety of dangers which many drivers do not realize or think of on a daily basis. Now compound that with someone that now has other thoughts on their mind: gotta see that radar, irate from being stopped, thinking of the meeting they are now that much later getting too etc... all a recipe for a very dangerous outcome.
Above is merely a suggestion/thought and in no way constitutes legal advice or views of my employer. www.OHTA.ca