A monitoring system includes one or more monitoring devices, positioned in sewer manholes, storm drains, etc. The metallic core has two sides with at least one side having a plurality of projections. A remaining distance of the shadow area is calculated based on the vehicle position in the shadow area on the driving path and the remaining distance information of the shadow area is output. A distance between distal edges of the locking projecting pieces is larger than a space between the locking bent portions, and a circumferential length defined between radial side portions of the locking projecting pieces is shorter than the space. These UZM-35 zeolitic compositions are active and selective in the isomerization of xylenes and ethylbenzene.