Do they have to have the road markings for Gatsos? Truvelos don't have them...... Also note that Avon & Somerset have three 'civilian' BMW bikes (fully battenburged) which carry portable speed cameras to set up at the roadside.
The one at henlade is still not working (30mph) & on the a303 between yeovil and ilminster (60mph) no measurement markings however loads slow down anyway!
Please note the park the a camera opposite the a303 one in the pull area and snap away.