Other roadside devices — Texas Permit Test

Barrels engineered to act as an impact cushion are usually installed in front of a solid obstacle and in areas where crashes are frequent.

They are there to be hit instead of the concrete behind them. Seeing a row of them says something solid is close.

Barrels that are engineered to act as an impact cushion reduce the seriousness of crashes. These barrels are usually installed in front of a solid obstacle and in areas of high crash frequency

A flag on the back of a bicycle means the rider may be hearing impaired, so a driver should slow down.

A rider who cannot hear you has no warning you are there. The flag is the warning going the other way.

If you see this flag on the back of a bicycle, slow down, as the bicycle operator may be hearing impaired

The slow-moving vehicle emblem is required for vehicles designed to operate at a maximum speed of 25 mph or less.

Closing on something doing 15 mph from highway speed leaves seconds. The emblem is what buys those seconds.

This emblem is required for all slow-moving vehicles. Slow-moving vehicles are those designed to operate at a maximum speed of 25 mph or less, and the term includes all vehicles, farm and other machinery, and any other road machinery drawn by either animals or slow moving motor vehicles

Using the slow-moving vehicle emblem on anything other than a slow-moving vehicle is prohibited, and it must not be used on other vehicles or on stationary objects.

An emblem on a fast vehicle teaches drivers to ignore it. That is why the ban covers mailboxes and gateposts too.

The use of this emblem is prohibited on anything other than a slow-moving vehicle. It must not be used on other vehicles or on stationary objects

A vehicle used in actual construction work while traveling within a marked construction zone does not need the slow-moving vehicle emblem.

Inside the zone the whole road is already marked as slow. The emblem would add nothing.

b. Exceptions. The following do not need the special emblem: 1) A vehicle being used in actual construction work while traveling within the limits of a construction zone marked as required by the Texas Transportation Commission;

Where are Texas impact cushion barrels usually installed?

In front of a solid obstacle. They are there to be hit instead of the concrete behind them. Seeing a row of them says something solid is close. Texas Driver Handbook, p.35: “Barrels that are engineered to act as an impact cushion reduce the seriousness of crashes. These barrels are usually installed in front of a solid obstacle and in areas of high crash frequency”