Drivers across Quebec have to be a lot more attentive on the road.

Transport Quebec began placing 18 new photo radar installations in suburban Montreal on Monday morning, part of 129 new installations going up across the province by mid-November.

That means there will be more than 150 photo radar installations across Quebec.

Many of the new locations will not always have photo radar active. Instead, the ministry is using mobile trucks so that drivers don't get used to areas where they know they have to slow down to avoid a fine -- then speed up again.

We have six new radars, all of them are mobile, so that we have one in Quebec, one in Montreal, one in Gatineau, Three others were given to the Sureté du Quebec, so they will be be somewhere in the Montreal area," said Sarah Bensadoun of Transport Quebec.

"You will always be with appropriate signage."

Nine of the new locations are on the south shore, including two spots on Taschereau Blvd. in Longueuil and in Brossard.

Drivers on Roland Therrien Blvd. should also expect to have excessive speed flagged, as will those on Fernand Lafontaine Blvd.

Transport Quebec says the new locations have been picked because they are areas with a high number of collisions.

Meanwhile the most lucrative photo radar site in the province will be removed.

The installation on Highway 15 southbound, near the Atwater exit, is disappearing despite generating millions in revenue for the province.

Transport Minister Robert Poeti said that most of the 14,200 tickets issued by that installation last year were at night, while the number of collisions was quite low.