What can you do if you witness an HTA infraction (or worse) but have no cell phone with you? I'll give an example I personally experienced.
Several years ago, I was driving on a 400 series highway, where one highway merges with another. There was a yellow speed limit posted of 70 kmh (which is the recommended speed but the limit was 100 kmh). I was in the left lane and another car was in the right lane doing around the 70 kmh limit. There were no other cars nearby. As I approached him, the other driver very suddenly swerved into my left lane and I had to slam on the brakes and swerve to avoid a collision. To say I was dumbfounded would be an understatement. I almost went off the road and attribute not doing so to the Brembo brakes I had. I drove back onto the road and slowly caught up to the other driver. I saw him point to a yellow speed limit marker of 70 kmh and then understood that he was angry he thought I was speeding (even though I legally was not), and decided to tell me so, in his own demented, vigilante way.
I was very upset but didn't have my cell phone on me at the time to call anyone. I decided to follow him, at a safe distance hoping to come across a PC. I did not threaten him or make any indications to him other than to quietly follow him - we were both doing the speed limit at this point (traffic was heavy). He apparently didn't like me following and signalled to me that he was going to call the police, by holding up his cell phone - which was exactly what I hoped he would (but he didn't). I followed him for several more km until he suddenly dashed from the centre lane (it was 3 lanes) onto an exit ramp. I followed him (signalling and checking my lanes appropriately) and at the bottom of the exit ramp was a set of traffic lights - he proceeded to blow right through a red light. At that point I decided to stop following as he was obviously out of control and I was concerned he would end up killing someone. Plus I wasn't going to break the law to follow.
The question is, what were my options? I didn't have a cellphone but I did get his tag and description of his vehicle (I still have them). Afterward, I decided not to report him as I thought it would become my word against his and without proof, I would have nothing. What recourse would I have? He could have very easily killed me that day - I could have been found dead at a highway curve without him ever being attributed to causing the accident. It definitely destroyed my trust and confidence in other drivers - there are some really stupid people out there.
Your opinions (professional or not) are appreciated. Thanks.