Color on these signs is critical to attract attention to them. Ask about the cost of production as well as the monthly rental charge. Have a few more than the actual number of posters you need printed in case of vandalism or wear and tear by inclement weather. It's less expensive to have the extras printed at the beginning than it is to do a few by themselves later on. Paper needs to be changed every 45 days or so depending on the weather.
Outdoor companies are among the toughest for contract cancellations.
So be sure you can afford the boards you buy before you sign on the dotted line. Choosing your board locations in advance is advantageous because it allows you to choose from the best locations. Drive passed every board before you make your selection. You want a long read not a sign that springs at you from around a bend in the road giving you only a glance at it as you go by. Also, consider the time of year your message will be on the board.