DRUG testing across the board? Of course, the police must set an example, and this should be and always will be of paramount importance.

With respect to drug taking in general, the Road Traffic Act has always incorporated the words under the influence of drink or drugs.

However, in this modern age of medical advancements and with the vast array of medication that is available, even though you may not drink you may be susceptible to being not in full control of your vehicle while driving.

Are we to assume that anyone taking medication should be suspended from driving or other duties until their course of treatment is complete?

With regard to "drink and drugs" in general, we know that each individual has varying degrees of impairment in their metabolism, so where do we draw the line?

Kenneth Bowker, Vesper Walk, Huntington, York.