Local residents are speaking out about the installation of RapidTO transit priority lanes on Dufferin Street last week, an already-controversial project adding priority red-coloured lanes along a 2.5-kilometre stretch of the artery since Nov. 16.
A concerned local reached out to blogTO and other media outlets last week regarding a "chemical stench" emanating from the work area between Dundas St. W. and Queen St. W.
RapidTO confirmed in a follow-up email that the substance being used for the red lane surfaces is indeed MMA, which a representative of the project describes as "a durable road marking material widely used in Toronto and other cities for crosswalks, lane markings, bike lanes, and bus lanes. MMA is chosen for its long lifespan, skid resistance, and visibility."
The representative explains that the City uses MMA "because of its durability, fast curing time, and improved anti-slip properties compared to conventional traffic paints," and stresses that the material is non-toxic.
As for the smell, RapidTO maintains that "Open-air application is the recommended method to ensure proper ventilation."
"As with any pavement marking installation, there is an expected level of odour while the material is being placed and curing. MMA in particular has a strong, acrylic-like odour during application."
According to RapidTO, "The smell can be noticeable in the immediate area, but it is temporary and expected to dissipate as the material cures, typically within a couple of days after installation."
"While the odour can be unpleasant, the levels experienced outdoors do not pose a health risk to nearby residents or passersby."